I don't know.....
Yamaha pro stuff generally is only found in the motif's. I really like how a sound in the motif is build from 8 parts and how you can controll those parts in real time.
Next to that i'd love to see some knobs on an arranger keyboard for once (as on the Motif and other synths)and the abbility to realtime controll the paramters of my sounds
But then this and the 76 keys layout is the propity of the pro division of Yamaha. and will probably never find its way to a home keyboard like the T3...
Next to that since yamaha is the world leader, most other companies just follow what yamaha does and don't want to step to far away from the path that yamaha sets..
The path towards the future of arranger music is currently set by Wersi and Lionstracs... where the Wersi is way to expensive for most and all in all despite the open system and the use of vst's pretty much still the same as the other arrangers and organs..But sounding much better.
Where lionstracs is much more progressive in their development, its still more of a development project continuously growing, then a true ready to use instrument. As long as ther aren't hundreds of awesome sounding styles straight from the box for lionstracs....most people will not be interested.