Infrequent poster here (but frequent dominator/brute player!)
I've been testing out this set some on a dark melee brute and I've been having a blast with it. I really love the adaptive recharge on the powers and would love for that to proliferate around to other powers (like soul drain!). It's really exciting to see new design concepts like that. The combination of the two sets work really well for stacking mez, especially when using the control hybrid incarnate (which makes me feel like i'm playing a melee dominator with an actual armour set). All the regen/buff powers that need frequent supervision really make me wish I could auto 2-3 powers but they're reasonable to manage during a fight so it doesn't feel too busy. In the testing I did with just a little bit of slotting to 'up the punch' from the auto slotting yielded a combination of powers that gave me a brute that was super sustainable (was testing on +1/8 and +3/8) but played with a very different feeling from other sets I've played on brutes with the emphasis on control. This legit might end up being my favourite armour set when it hits live and I'm looking forward to more of a deep dive into it.
I don't know if it would change things a ton, but it feels like it would be pretty amazing if we could get the option to slot brute ATOs into Aura of Insanity and/or Mememto Mori. I haven't ran any numbers on proc odds or anything but it *feels* like it'd be a fun option to have! Regardless, I'm loving this set and can't wait to see it on the live servers!