I think the wii has plenty of core games...it just hasn't in the past six months. The first six months of this year kicked plenty of ass, but this tail end hasn't been doing so hot. Inferior ports of games on the HD systems, and a couple of interesting titles like de blob. But compared to what the competition has been doing that past few months...eh...well, I haven't touched my wii in some time.
I definitely will when Sin and Punishment 2, and No More Heroes 2 come out, and MAYBE the conduit but right now compared to the onslaught of awesome games on the HD systems the wii doesn't have much to compete with for the core gamer's attention.
You can find me on facebook as Markus Van Rijn, if you friend me just mention you're from VGchartz and who you are here.