Please, give us chat tabs. Their absence is a tremendous cause of typos for me, and I'd greatly appreciate the ability to simply turn off local chat, which I never use.
Having to click through and accept 100+ individual items won or sold on the Auction House is tedious. I'd really like to be able to accept all crowns and items in my mailbox with a single click.
These are just my reasons for wanting these features, and I'm sure many many other players want them for the same or other reasons.
+1. Good ideas.
Having your chat stuck on /guild or /tell has been used in other Three Rings games (puzzle pirates, for example). It should be very useful on this game too.
I luckily don't sell/buy a LOT of stuff on the AH, so I don't really have any problem with the current mailing system.