I can see why the dialog options are kind of awkward. I'm not used to it myself. I feel like they should be switched to present-tense. I don't mind that they aren't voiced and just give of the general vibe of what is being said...kinda let's you fill in the dialog with your own imagination/voice (which is good for custom characters).
I disagree on the initiative bit. I think each side going in turn is a better way of handling the flow of combat. At the table, I would always do initiative in the traditional sense, but in-game? I think having all of your allies go at the same time helps speed up the game and makes multiplayer more engaging if all of the players can go together instead of waiting for each other.
Definitely agree about the jumping animation. Looks like it is a placeholder from DOS 2 though, so hopefully it will change.
With regards to passive perception, idk. I can see what you mean. The game is tipping you off that something is there. But at the same time, it's nice to see the system actually working. Too much behind the scenes stuff and you'll just assume nothing is there, no secrets to uncover next playthough if you fail your check.