I mean don't get me wrong, they are definitely evolving and refining their games, and I really do hope they pull it together and make something awesome for Mass Effect 2 and whatever non-MMO stuff they've got in the pipeline, but as of now I really don't think they've shown that they're in any real position of authority in terms of refining existing systems, nor have they really shown any willingness to go with more experimental game mechanics. In both cases I could point to at least two JRPG developers that excel in each of those categories, and probably more if I took time to think about it or starting throwing one-off games into the mix instead of franchises.