I thought the Zhent fight was way too easy for two reasons:

1) my level 3 party was able to take out the leader before she could even react. I suprise-attacked from the high ground and it was over very quickly. Hunter's Mark, nice arrow shot, 2nd-level magic missile, bam. She should be higher level.
2) not everyone in the cave went hostile and joined the fight. This is definitely a situation where that should have occurred.

I also hope that in the not-early-access story, this encounter ties into later events, and there might be decent reason to not murder-hobo them all.