MikiMiki,
I think I understand what you are saying. But I'm also guessing you may be missing the point of this arranger forum.
I'm originally a string and brass player....college trained. Did concerts and what have you in some 'educated' venues. And now, I'm attempting to learn piano with a weighted keyboard.
Arrangers, for me, are a different animal. They are about entertaining...not about learning 'Fur Eliese' (sorry missing the umlaut on Fur) on the piano. I bought a weighted piano to learn Fur Eliese.
Let's enjoy arrangers for what they are...extremely versatile keyboards that work great in entertainment venues.