Well I'd say as it might be nice for some players most of that is NEVER gonna happen on the
Psr S-line of arrangers anytime soon if at all as their popularity is immense worldwide already without it,..... personally I have no problem with the buttons and I love the lightweight keybed touch, the speakers are great for monitors, very small jobs, & practice. The LIVE Control Knobs are a super feature added on the S970,... There will always be some who want things that others don't that will never change,.... Some love a touch screen some don't care either way.
you just have to choose whats best for your needs in an arranger...if one doesn't have what you want there are other nice choices ....and even then things will change in a few years.