I just read one of the developers (here). He says that one of the things the team is working on, and they hope to have updates on soon, is: It doesn't give any specifics but I think this indicates they've heard the community and are looking at the issue, so let's hope for the best :D
Most items (if not all) bind on equip, so selling it after using it is not an option. It's true that sometimes you roll for greens (unidentified) without knowing if they're useful or not. About the clicking by accident and winning stuff you can't use, how about something like WoW has where you have like an hour or so to…
Thanks for the answers, it's kind of discouraging though xD. Better start looking for a guild I guess. xanos900, when you do a dungeon through the "search group" system you can't kick people from your party. The telling and ignoring if there's a second time is what I'm doing by now, but it's not working much (most people…