I just went through an entire playthrough of patch 8 and I can't really say I've had a ton of chances to appreciate Swarm AI.
In fact, I distinctly noticed it just ONCE when four goblins in the temple courtyard moved concurrently and (so far) that was pretty much the full extent of it.
Yeah, have simmilar experience ...
But today im going to fight Goblin camp, so fingers crossed. ^_^
Did they also change "cast spell again"?
Well ... yes, but im not quite sure if for the better. :-/
Right now recasting is showed on extra bar that appears on separated 4-slots bar that is invisible if unused, nothing can be dragged out, nothing can be added in, not quite sure if it can expand futher ... but it certainly takes space that could have ben used for regular hotbar.
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//Edit:
On topic ... there was also some major HP reductions for NPCs ... especialy for Goblins.
Sadly there was also sobe boosts ... especialy for Githyanki.
