Often enough the game gives you hints on time what companions think about certain topics. I rarely run into situations my party disapproves.

That's a great idea. I'd probably reconsider some choices if the right party member asked me to. And if Astarion disapproves, then I know I must be doing something right lol.

Also a chance to reconsider/appease/apologize before being attacked for a comment. Sometimes I don't get the exact meaning of what my character is saying until it's too late.