Technically they do: They give you a belt. 
And if thatâs the way you approach them; that means theyâre not meant for you.
I really wish all the people who delves are not made for, would stop whining about them.
Iâm not constantly whining about M+ am I?
This really, most people complaining about Delves start out with âWell, i donât do themâŚâ, good for you, then donât bore us with your opinion about them, i donât go around ranting about M+ or normal+ raids, either.
I like Delves because theyâre not too challenging (I play games to relax, personally), yet give me something to work on and progress my character for the whole season (As opposed to, say, a rep-grind thatâs done in a month), but i try to be âLive and let liveâ as to other avenues of progression.
I donât mind delves but what I donât get ( which is similar for a lot of content ) is that you have to run LOTS of them to max the tree to make them easierâŚ
ButâŚby then you are sick / bored of them so whatâs the point in maxing it ???
Thatâs disappointing to hear.
However, I do not think delves not being the hardest thing out there means the whole system failed. I think delves are very well tuned, weâre just near the end of the season and ultra strong now.
That was what this Overcharge system was supposed to address though, and if it doesnât, it is a failure. 
Yeah, itâs a bit daft.
What Iâm doing: Iâm running lvl 1 delves. Really going through them fast. And then when the skill tree is full, Iâll start doing level 11 ones again.
Doesnât that count for any form of content?
Iâm doing LfR to get the Gallagio renown thingy maxed (Started for the transmog coins, but if iâm 3/4 of the way there, might as well keep going), and iâm fed up with loony goblins and their self-inflicted problems.
But for what? Gear and rewards are capped. Why do they need to be easier lol. Like I said if they put this in the start of season 2 then great⌠But now? Why bother. Already geared from Delves long time ago.
I think that the talent tree making negative parts of overcharged delves into downright buffs is pushing it a bit, but itâs the end of the season, who cares at this point?
Iâm working on fully upgraded hero-track gear from Delves (With some crafted items) on this character and my Warrior main, and thatâs kept me occupied quite well so far.
I did say that in the first line 
I didnât know you could do thatâŚI have been doing them on T8 because T11 is a bit rough on a ilvl650 enhance shammy
âŚsnap - collected all the spells on the belt, just going back through on level1 to grind through the tree and get the mount, then do them at leisure on higher levels.
I just ran a couple of these on T11 as a protection warrior with item level 657. Some are very easy, while some canât be cleared without luck because of how they are designed.
Blizzard havenât tuned the mechanics of each added content to interact with each other. So now they just appear randomly altogether.
That means, if you are unlucky, two nuclear mechanics, that require two different behaviours to avoid, will appear at the same time, at the same spot, and just kill you. Thatâs not challenging, thatâs just a lottery, and you wonât know until you are there.
I also noticed that Brann sometimes randomly forgets to throw out his medicine. That will probably kill you on Tier 11 if it happens at a bigger pack. But I assume thatâs a bug.
I think the design strategy of starting with a set of Delve at expansion launch, and then adding more mobs and more complexity, with more capabilities, for every patch, is understandable because you can renew it and add challenge, but ultimately it will become impossible to tune, because there are too many instances.
You now have a number of Delves, I think itâs 10, with 4 different stories each, 11 different tiers, with two content patches added. That means Blizzard needs to tune and integrate the mechanics of hundreds of possible scenarios. I donât think they can do that.
Iâm disappointed because this happened in the beginning as well, the big Nerubian Lord just one shotted you when you were meters away from the end chest. Now I feel like I donât want to waste time by visiting Delves that I might not be able to clear.
the idea is that if you would just unlock them as you do overdcharged delves overtime but because the power is active elsewhere they also allow you to grind it out on t1
I tried it, t11 and t1 have no major difference in amount of shards dropped by mobs to unlock it
you can probably fill things out under an hour grinding it on t1
ideal? no, have they done this before? yes, but to be fair atleast theyâve added a âjust get it over withâ method this time
They screwed up when they made farming overcharged T1 viable. On T11 with rogue and no unlocks it can actually be a challenge sometimes.
I have a couple of questions since I have been confused about this whole overcharged delve thing.
1.What is the reward difference between a normal tier 11 delve vs Overcharged Tier 11 delve apart from filing the delve talent tree gives a mount? Like more crests or better vault gear etc
2. Does the talent tree affect even normal delves?
Thereâs no difference in rewards as far as I know.
No, only overcharged ones.
Well, I do it for fun, so⌠I guess I am an outlier. 
Just ran one of each and noticed I got twice as much valorstones from the overcharged one.
Why?
If you donât like that; go do it on level 11 delves. You do you.
Why do you want to force others to play the way that you like it?
Unless you count the achievement mount. Itâs an indirect reward, but youâll have to do overcharged delves to get it.
So much this but people just want to control things for no other reason just to annoy others.