True, but only 3%. You are asking for +10% for destruction spells if they make supression talent for all spells instead of “only affliction”
And that change would put fire destro once again even more ahead of affliction. I am not a fan of that tbh.
But to be fair it could be implemented as you said… put +2% spellhit per point spent in destructive reach.
3% would be OK even. Or at least the equivalent to mages’ elemental precision
It would make sense to make the “demonology head rune” to be fel guard. But it would only compete with backdraft and pandemic if they increase its damage by at least +50% and attack speed from 2s down to 1.5s or something like that
Generally agree with most of the stuff here, I will just add my two cents.
Warlock melee pet damage scaling is in general very bad in comparison to Hunters due to less damage / AP bonus modifiers when compared to Hunters but also any party / raid AP buff that is applied to hunter is gonna be partially transferred to the pet because Hunter shares percentage of his AP with his pet while the pet is gonna be directly affected by those buffs as well (except world buffs) so they are kind of double dipping. On the other side Warlock pets scale with his / hers SP, and the only SP party buffs comes from the warlock (demonic pact) so you end up in situation where Warlock in melee party does not double dip his Felguard / Succubus because AP buff on lock does nothing to the pet or you provide your party with demonic pact which really impacts only imp (it gives your melee pet some +7-8 dmg per hit due to increase to your SP) and then you probably end up in caster party where your melee pet does not get majority of the AP buffs. Solution - as mentioned before either buff unholy power directly or give it also bonus to AP scaling from Warlocks SP.
Felguard - as mentioned above, more scaling with demo tree. Maybe make him get bonus attack speed from imroved subjugate demon, or make him proc fire stone effect when you take improved firestone talent, make him unlock demonic frenzy (stacking AP bonus with every hit) and or felstorm when you take some high level demo talent (soul link, master demo, sacrifice etc).
Metamorphosis scaling with demo tree - bonus health from fel stamina talent, reduction of mana cost from master summoner, reduction of CC or at least banish duration from imroved subjugate demon, ap scaling from locks SP with uholy power, etc .
Everlasting affliction - corruption should be also applied by all variants of shadowbolt (volley, shadow cleave) not just refreshed. That would give decent buff to affli and demo, mostly in AOE situation.
Invocation - just make it proc at least for half the effect every time you recast the dot on the target regardless of remaining duration, again would buff affli and demo and would synergize very nicely with Everlasting Affliction.
Vengeance - maybe give huge buff to damage to both Warlock and his pet when activated while soul link is active (and maybe huge buff to threat or damage while Meta is active)
Meme abilities and talents:
Drain mana - too slow mana drain given how bursty SOD is. Maybe make master channeler apply to drain mana but only for 5 seconds and give it 15 sec CD?
Improved drain mana talent (15/30% of mana drained causes damage) - this equals to 15-30 DPS at lvl 50 with ability that needs to be channeled. Maybe if it dealt 100/200% of mana drained as damage it would be note worthy.
All talents that incrase only base damage instead of total damage of individual spell - amplify curse, imroved curse of corruption, improved immolate pretty much every talent that has specific spell name in it - these need to scale with damage from SP / AP (regardless of class) as well not just base damage.
Abilities that do not scale with gear at all - for example Curse of Weakness bosses and players hit for 1K plus before any reduction is applied and this spell reduces raw damage by 22 at lvl 50. What is the point of this spell in real situation when you can either cast CoS, CoE, CoA or CoR instead all of which either scale directly or indirectly?
Fire Stone, Spell Stone and their respective talents. This conjured items are clunky to use (off hand item), Spell Stone is one use, so you have to switch to other off hand item when you use it but if you want to use mid fight you need start the fight with it because when you equip it it has 30 sec CD, it absorbs only whopping 650 spell damage at lvl 50. There is a capstone talent (yes demo lock has 2 final talents, other one is Soul Link that is disabled in metamorphosis) that increases absorbed damage by 15/30%… The talent need to make it multiple use item with 60 sec CD and increase the effectivness by at least 100% of not more to be at least bit relevant.
Fire Stone - make the proc damage scale with locks spellpower (currently it procs for 60-90 fire damage roughly every 6th autoattack at lvl 50), maybe make it proc from felguards attacks when the fire stone is equipped by warlock (or maybe bind it to the talent).
Improved Fire Stone talent - another high level talent that does effectivelly nothing, +15/30% to the effect of firestone (so +5 fire SP and +18-27 damage to the proc at level 50). Make it proc from dots and Felguard autoattacks for 50/100 % of the proc damage on top of the current bonuses.
Improved Subjugate Demon - this is so extremely niche and at the same time it is very high level talent, it should increase duration of subjugation on top of reducing the debuff to make infernal and doomguard better with demo talents, maybe even cause some direct buff to inferno and doom like reduction of CD, number of participants for ritual, scaling of these pets with demo talents etc. Or if we are feeling spicy maybe buff to Felguard like increase to attack speed, felstorm with 5 points put into this talents, maybe give Warlock ability to equip his Felguard with 2 handed weapon.
Soul Link - if the damage transfer while in meta is too much give it some alternative effect. Like double effect of master demonologist, or all the “demo” runes or threat transfer from pet. It is rediculous that final talent of the “tanking” talent tree is disabled with tanking rune.
Tbf they could just have made a head rune giving +100% damage to pets (would put them in line with hunter pets) and call it a day.
I would be happy to just receive a mana reduction on all locks spells ,going oom after 2 rotations and then having to life tap your healers mana away is just annoying
Yes life tapping this much is quite a dps loss.
But just reduce the the mana cost seems a bit boring and unlikely to happen.
New Rune idea: Rune of Life Tap:
Life tap is no longer on the global cooldown.
and binding life tap to mouse wheel sounds like a fun solution to you ?
Yes of course! Because binding it to some spells via macros would be too easy. 
Yes bad gear scaling is really a core problem and is also happening here with Feral druids. I made a fresh post about it!
Sick. Feral druids are even more punished with gear scaling than dot users!
to be fair it are only the Weapons that suck. but that alone is catastrophic enough.
Thx for the support! People need to know about such theroy stuff. Devs won’t change anything if nobody of the players cares about these problems.
Or maybe “life tap GCD is now 1s instead of 1.5s and the amount of mana awarded per healthpoint is now 2 instead of 1.”
This would reduce the dps loss from life tapping by -66.7%
Oh no… no hotfixes coming for warlock.
But they at least announced to make warlock with the next bunch of fixes.
I hope they use some of these ideas.
This is not enough to make it as useful as “ruin” talent. You have to choose between them and after this suggested change you would still be a noob if you pick dark pact over ruin.
There should also be some damage component added like “your damage done is increased by +5% for 10 seconds after casting dark pact”
I only want to see Demonic Grace off GCD honestly.
Oh, and firestone support
That would be great too yes.
That is true, i will change the original text and add something that would make sense.
Please blizzard make these happen. Would be an easy and impactful improvement for both pvp and pve !
They did it!
The actual modifier % are not published but they will start the “experiment pvp dmg resistance”