I own the T5 and I would like to see a couple of things

as a Guitar player I would like 1 extra mic / line input so I can tap into the great guitar effects and still use the mic setting I would like to see the Demo button go away better Piano sounds on board EQ buttons for real time edit on the fly cubase intration like motief

256 poly , and a case that fit it. that is not 50 lbs

Ron
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Genos, PSR S970, Fender Tele Amercian Deluxe Cherry sunburst , Cubase Pro 8 ,Yamaha A3M Acoustric ,Taylor 814, Ibenez Artcore Custom Tascam DP 32 Yamaha DXR 10, QSC K-12, K 12 Sub K 8 Sinn 945
2 Fender Expo line units .