Let me start by saying I am not taking credit for these ideas as surely someone has mentioned them to me at some point but I can't recall who or when at this point lol. I just need to get them out of my head and pooled into one spot for easy consideration:
-search inventory option when adding items to trade tables: time saver and also when I scroll through inventory it goes too fast and I pass up what I am looking for.
-perhaps add a weapon damage statue thing to the trade center rooms, kind of like in spar: people want to know damage quickly when deciding on trade value, would just be convenient.
-make arcade coins tradeable: they are given with freebies and those items are tradable, I don't use the arcade and these coins are just stuck in my inventory.
-search furniture inventory option at house/ganghouse: helpful for people who hold items and need to look up an item (40 limit on inventory too is hard to manage at times if you are housing numerous holiday furniture items) but I get server storage space issues.
-grabbable player pet: like a statue but similar to the Storm pet sold you could have the likeness of a player as a pet for your house that you could change and lock.
-threaded pms: more like the Classic pm system versus just the last 10. If you are in a busy gangchat and log in you can often loose offline pms before you even get a chance to read them.
-inventory folders: would be nice to be able to have more than 5, and when I put items in a folder it should stay there and not be replicated being visible still in general inventory. I need a way to organize inventory without having to scroll through so many pages - hush wiseguys who will have non productive comments on this issue....
-hats: I kid you not I have almost 50 pages from so many years if playing. Perhaps add a folder system here too where players can organize like by holiday, function, etc.
I had others but they slipped my mind atm. I will throw these out there for now, constructive criticism and consideration please.