it' s the most important game for 360
I beg to differ. While i think that Halo 3 IS very important to 360, i think that Too Human and Gears of War specifically are MORE important.
Halo 3 is the final chapter in the Master Chief' s story as far as games are concerned and Too Human is going to be a trilogy, -- and Gears of War is a HUGE exclusive title that will showcase the most popular next-gen engine on 360.
Gears of War is as important to 360 as Halo was to Xbox and Too Human is going to be something else.
Halo 3, Gears of War and Too Human (amongst many others) are going to benefit from both XNA and DirectX 10 so you better believe that they are going to look fantastic!
Like i said, ad as Gangsta noted, -- Halo 3 is likely to be shown and aimed directly at the CG Killzone trailer from E3 2005. Killzone will also probably be shown ingame so Microsoft showing their hand now must be very confident about the title.
It' s fair to say that it will use at least 80% of it' s potential
Current potential sure. But 360 isn' t like Xbox, it' s going to be more and more accessible as time goes by so like PS2 you can expect graphical leaps along the way, especially because of the new generation of middleware.