Let's be honest here. There are not a lot of JRPG fans with Wii's since Wii hasn't had any JRPGs to really get excited about. JRPGs seem to be a dying breed as well.
However, Wii now has some of the biggest and best with Xenoblade, The Last Story, Tales of Graces and DQ X.
Individually, they will not pull enough people to Wii to matter (outside of DQX in JP), so if NoA / NoE are to make anything of having them, I think their best bet is to announce them all pretty much simultaneously and then release them strategically (one every 3 months or so). If JRPG fans see a chance to get 3 or 4 of the best JRPGs this generation, that will encourage them to buy a Wii, if just for that.
Now if only Nintendo can get KH3 as well... That would make it a sure buy for fans of the genre.
And a new Fire Emblem would be nice Nintendo...
