First and foremost, I would like to complement zalmang for posting his observations about the Genos here on the forum. It's always nice to read someone's first, hands-on experiences and impressions about ANY arranger keyboard and I for one value them a lot over speculative comments, posts and threads.
Now, about the large, plastic buttons. For many years, arranger keyboard owners and players of ALL brands, have asked for larger, positive lock, lighted buttons that were not made of rubber on the TOTL arrangers - again, Yamaha answered and responded favorably along those lines.
The same goes for the touch screen, and from my observations, at least from what I can see on the videos posted, the response time is about the same as any touch screen system - not slower or with any greater delay. I could be wrong, but that's just from from a video observation - not hands on. I've worked with lots of touch screen devices, smart phones, marine electronics, etc..., and they all have some detectable lag time, though it has never been significant to me, maybe because I don't need fast stuff at my age.
Finally, zalmang's post was after just a single day of hands on with his new Genos - which for me would be difficult to evaluate that quickly. Every piece of electronic gear I've ever owned, marine, smart phone, PC, arranger keyboard, PA system, vocal processor, mixer, you name it, took some time to get it to function the way I felt was best for ME. Despite more than a half century of working with electronic gear, I could not possibly have evaluated any of it in a single day with any degree of certainty. I think the biggest problem I ever had along these lines was I always wanted my new keyboard to sound and function just like the one I was replacing, only I wanted it to sound better without doing anything to it - that never happened.
Again, a big thanks to zalmang for posting his comments and hands on experiences, but I will have to reserve my judgement until I either drive for 8 hours up to Frankie Vee's, or see many more hands on evaluations by others, particularly live entertainers who utilize every aspect of the keyboard in their daily lives making a living onstage.
All the best,
Gary