I would drop the top 10s for now:
Reason: Its too soon in the year to call what the major game releases are going to be, its better to stick with a list of significant releases and reduce it down to a top 10 at a later date when you're sure you know which games are coming and to which platforms.
I would lump 360 only and 360 (S)exclusives together instead of having them seperate. I believe its more important to remember that 90% of the use this list will serve is for the benifit of current Xbox 360 owners. If you keep things together in one alphabetical list aside from a future top 10 it will be simpler and people will be able to make better use of it. Why help people turn your good work into those annoying list wars? 
Apart from that, awesome work!
Tease.
