Seconding this but this doesn't sound like a suggestion/feedback quality thing and more of a bug. The fact I can't dismiss friends' characters means anyone dropping in on my game would effectively ruin my save if I don't have my shields up and prevent people from joining from step 1.
It's really crappy - I have no reason to want a friend's character here if they aren't here to play them. At least let me put them on the freakin' shelf.
