Ideas to improve overall in-game experience

I realize most of these have been suggested before, but I think we should continue to advocate for certain feautures to be added for convenience:

-Expand trade slots to have a 5-6 item maximum, since most endgame sets are considered 5/6 pieces, instead of the original 3-4pc sets that the game originally had. Possibly reduces the chaces of scamming/need of a middle man
-In game mail system, where you are able to send messages, items, and gold(?) to offline players.
-Stash Categories and Search Bar, similar to inventory and CS
-Online player statistics, the game used to display how many people were online at a given time, it would be nice to have that feature again
-Option to reroll stats while in a pvp game

Feel free to add additional ideas

These are all really good, I hope they get implemented.

As suggested by many others is an in-game clock in balefort (probably ok'tal now). It would be an easier way to synchronise events and tournaments for everyone without the added difficulty of timezones.

Also, I think you mean respec in PvP as opposed to reroll. that won't get added back in.