very very no flexibility
Little feedback after having played a lot in m+ the first week 
and well my opinion did not change it is lame this system of aoe… really lame…
It’s totally fickle, you have to build insanity (100) to do some aoe damage (2.8 sec or 1.4 sec with 50 insanity lol… ) and then pray that the mind blast procs a free spender (mind sear in aoe or devouring plague in mono/bi target) and it’s rare… very rare. 
So yes the rare times when it proc I can go up to 90 - 130k but it will be once in the instance, it is then necessary to re build the insanity which is extremely long compared to the s1 of SL and this by making pure monocible during sometimes more than 10-12 sec where the other dps will cleave like mad monkey 
Shadow crash) is also badly calibrated, the spell itself is practical although the zone is really not big, but it is not enough to maintain a perfect uptime in aoe (more than 5-6 sec without dot and we are not going to have fun to dot 10 mobs manually for 5-6 sec ), on the higher keys have to use it 2x on a big pack BUT.
We find ourselves without anything for the following one, obliged to dot with the hand + to make monocible during X time before being able to re-use mind sear… for only 2.8 sec it is a calamity.
The mindbender cleave is only strong with CD burst (PI + void eruption) when you can chain an SW:death + 2 mind blast + void eruption + 2 mind blast again , otherwise it’s really minimal.
I would almost prefer the mindbender to be a permanent summon with reduced damage, it would be more comfortable to play ans consistant steady.
Compared to shadowland season 1 which had an aoe gameplay without holes and dynamic.
Before in aoe it was enough to throw shadow crash, channel with mind sear and throw searing nightmare: 35 insanity, the whole while making SW:death (old talent death and madness) on the weak mobs in life, to recover a reset of the sw:death 
+ 40 insanity BY mobs killed in the 6 sec after exec.
the gameplay was 100x more nervous, 100x more synergizing so better thought and we could start each pack with 100 insanity or 70+ and be able to aoe immediately with 2 ways to increase quickly the insanity (sw:death and ex mind sear). it’s very very more flexible
And the saddest thing about DF aoe gameplay is that to have a build with a minimum of aoe opti you sacrifice a LOT of monocible dps (3.7k in my sim)
I watched a lot of Shadowpope stream, a top SP who had his 4P day one (26% haste baseline 
) and was doing m+ 16/17 from last Friday/Saturday (after 3 days of m+ what)
Well the guy was doing 40 or 50k overalls with his 4P while the rogue and monk were hitting 65 to 80k+ overall it’s ridiculous.
not to mention the mind blast proc and mind spike that interrupts mind flay… wtf terrible bad class design
(sorry for my poor english)
thing from beyond spawns when adds are dead It feels more clunkier now to play shadow than it did in season 4 of shadowlands.
