The hardest songs to play were those where I have to use more than one bank of registrations like that one:
https://www.youtube.com/watch?v=iv6yr9SmyswIf they sounds like a midi or not?
Well..... I wish they would.I am not that accurate
They sound what they sound,I play what I play....
Yes I have to push a lot of buttons.I don't feel bad about it.I don't play a digital piano.I play an arranger/synthesizer.
In fact I spend more time to be accurate when to push those buttons and where to "put" them in the song to be able to get my hands back on the keybed, than learning to play the actual song.
Try to use different DSP effects while changing sounds to see the degree of difficulty.
And I spend even more time to make the "arrangement".
Everything is part of the fun of keyboard playing.
Anyway...
Best use of registrations?
One registration for every different song .
(When the song requires a registration.Not all songs do).
Every song has it's own style or styles,voices etc.
And some banks of registrations with just some "favourite" sounds without styles and other stuff.
Just to be easy to find some modified combinations of sounds.