On the join games screen on ICO it would be extremely helpful to add a feature that would allow you to join that game's chat easily without having to type it in.  If you can't join the game, just select the game of interest and click the "join chat" option.

I don't know if this was meant to hinder spammers, but it is annoying having to type in manually every game's chat room.

another small fixes i can think of at the moment is:

Making passwords and chat room inputs have cursors ready to type information in without having to use your mouse to place the cursor.

Also a mail function would be awesome, to allow players to communicate with friends who are offline.  This would go a long way to improving the community.