I dont think you are giving the Wii's jrpg library a fair shake.
Like others have said: Monster Hunter 3 is coming next week and then you have Arc Rise Fantasia, Last Story, Xenoblade and DQX in the works...
And there are loads of Wii jrpgs out there that you might want to give a try. Go to IGN, go to the Wii section, and go look at their games under RPGs (and Action RPGs). Take a look around there, see what you like.
I probably won't be touching any Wii rpgs anytime soon but I definitely want to try Final Fantasy Fables: Chocobo's Dungeon. And Monster Hunter Tri is just around the corner. I never played a Monster Hunter game. I want to finally see what this whole Monster Hunter thing is about. Oh and Muramasa from the little I've played of it is pretty fun (it is an Action RPG).
Oh and don't forget about the non-RPGs. I'm having fun with No More Heroes (main reason why I bought a Wii but not the only reason) at the moment. Just killed Bad Girl and close to the end game now (I'm going to do extra end game grinding though to ensure that I have sweet stuff going into New Game+ for my second playthrough). Gonna get Madworld sent to me in the mail next week.