I'll rebute:
76 keys - ---- huge chassis - prefer 61
Fsr keybed - ------ At least the sx is catching up. (baby steps)
Aftertouch --------  never needed/wanted it
6 knobs ------  6 buttons
9 sliders - ------ you got me there. Sliders are cool
Bigger screen -------  I'm good with 7" (that's what SHE said?)
Better buildquallity --------  it BETTER be for the $$$$$$
More connections - ------ cool to have
More sounds.. -------  So far never wanted for sounds
Sa2 sounds -------  I don't use the SA aspect as much as some
Ensemble voices - ----- this is cool
Revo drums -------  I hear they're cool, but it's a very subtle upgrade
3 types of drawbar organs -------  I just need a good B, and Farfisa
Huge amount of dsp effects - -------Yamaha has always had tons of effects
No build inpeakers (which to me is a pro) ------- HUGE downer - speakers are a must for THIS pro
3GB expansion memmory -------  3 to 1 ain't bad (bad Meatloaf reference)
3rd party expansions, many more then for psr series -------  We'll see
Dual audio player -------  I like two, but one is fine
Better bigger and more buttons, -------  bigger is NOT better for most of my stages. Bigger, PLUS the extra amps needed .... ------ too much bulk for this guy
Just one man's opinion, and why they will most likely sell gazillions more 900s than Genos'.