Kungfuian... I think you are certainly on the right track. There are endless possibilities really. Take your poker game comment. Really at present you cannot play a card game on any console system in a multiplayer situation due to the fact you can not keep your hand private.... Really any game where there might be the need for a single player to have their own personal and private details could be developed.. I'm thinking things along the lines of old boar games like Battleship, Scrabble ...
I am signed on to Everquest 2 right now here in North America, so that is definitely working