I'm sure this has been mentioned, but the ability to manage the characters, who are not in your party, at comp would be great. Instead of having to throw someone out of the party, invite someone else in, run to the chest, equip them, kick them back out of the party, then invite the original one back. And have to hear all the complaining and "You think you can survive without me!!" convos. :P

Perhaps have a separate bar that you can select the characters outside of your party and you can switch equipment and other items with them. Also can level them up right from camp.