Gm4him, I hear your argument and I think it is perfectly valid for SP. The issue is MP. Arguably MP would most likely be with players already knowing each others. And therefore be tolerant and patient. However, I cannot emphasize how great it is that larian is trying to improve the flow to allow a faster resolution of encounters. Swarm AI is a great start.
I hope they would find something for reaction. And I really like the auto/targetted solution. If then can give a full control option for the popup lovers even better.
To me a nightmare scenario would be playing with someone halting on every possible steps and reactions (if you played magic the gathering you know what I mean) so I really hope they would have something that flow well. I see the fact they acknowledge the problem a big win already.