There is a lot that can be improved on the Genos ,at first the finish and build quality is a shame for this price category
8 Gb Flash mem ( ore more)
Oled screen ( very high def)
metal case finish, black
on board voice editor or better pc software ( like the MX/montage series)
new foot pedal like the Mfc10 and all the controls
smaller design of case ( like Korg)
better I-pad integration, or android apps
Multi Pad Quantisator
HDMi output ( not a silly adapter)
YC61 sound engine
Full style editor
Automatic VH like that other top arranger (Pa4) smile
better Rotary effect with decent overdrive programmable
a decent replacement form YEM ( it’s terrible now)
And a better Yamaha website for software , Musicsoft is the worst site i ever workt with

I cool
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Genos2,Korg Pa5X , Yamaha YC61, Ventilator2 . : https://www.youtube.com/channel/UCmC6hdAR1v5lYN8twfn0YbA