Diki, what I may say about what they might add, don't add, or need to add, would be simply after the fact. It's pretty obvious the Tyros5 is mainly finished and it will have what it will have. All your rhetoric is not going to change it now...not one iota.
I tend to keep things very simple and basic. These days, all I need be concerned with is getting the arranger that sounds and performs to suit my way of playing. The Tyros4 has proved perfect for my needs, so it's a keeper.
When the Tyros5 comes out, it will either be a phenomenal success, like the Tyros4, or perhaps less so...time will tell. I seriously doubt if I will buy one. I'm done buying for, hopefully, quite some time.
Also, I tend to take other people's opinions of how an arranger sounds, not as fact (as some here feel they are), but simply for what they really are....just opinions.
Ian
_________________________
Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.