I'd like to see a way to remove unwanted people from your ship. I get tired of new folks pulling up to me while I'm trying to take down a big ship and think it's ok for them to board and won't leave when asked (knowing they probably want to score off my plunder). Or at least a way for the "Go To" option to be reserved for those on your friends/crew/guild list.
Depending on my mood, I'll just sink my ship, doesn't bother me any. Especially if they're new. I have over 1100 in health and they don't. I can keep going.
Booting also applies to those who join your crew and don't contribute, expecting to profit just the same.
There are other things I know I've thought about, but that one really stays with me.