Let me direct you to this post a few hours ago in an AI Overhaul for NPC's. Elsewhere, it was verified that AI work will be done in tandem with purge reworking. The issues definitely are being looked into, it just feels very slow from the end users perspective. There is no [Fix All] button, so they do what they can. Another post today spoke of getting monthly patches containing bug fixes.
I have to agree with you on offline raiding, so I try to play on private servers with rules against that.