I think selling Wii would be a mistake Why? next year shows that there are plenty good games coming out on the system also from 3rd parties; Monster Hunter 3, Conduit, Madworld, House of the Dead: Overkill, No More Heroes 2, JRPG's to name the few big ones. The Japanese developers started to switch to the system (no all of them) which is showing a lot of promise.
Plus there are some good games coming from Ninty: Pikmin 3, Sin and Punishment 2 , Punch Out. I do understand that you might feel that Wii does not offer much at this time (especially when most of its big hitters were released earlier this year). But there is a lot of good stuff coming.
And for now why not try Tales of Symphonia: Dawn of the New World i think this is getting released in NA pretty soon.
