Andrew,
some ideas/comments for the future:
when you join/rejoin a table and you are sat out, you cannot press play and continue the game immediately - you have to wait until the hand is over. I have noticed that for many times. NB this does not apply when you join at the end of a hand and are shown the play button.
have you guys though about having a friendlist? I suppose you rejected the idea since you are sat randomly and you cannot chat.
were there any consideration about using tabs for multiple tables or some other solution for not having many windows in the taskbar (in Windows OS) - I hate stacking them in one place as much as I hate having, lets say, over 8 of them.
in the players list of the tournament lobby, you cannot track some player by pressing the keyboard button of some letter (e.g. me - Pr3dat0r - someone could find me easier just by pressing "p" and seeing the cursor on a person who's nickname starts with a "p" and then is first in alphabetical order for the rest of the characters). I hope I was clear enough on this one
I remember this table randomizing thing (in cash games) was implemented due to the fact that some players migh work together, right? But what about the sit'n'go?