either your a 88key piano player or an arranger kb player two very different camps & needs..
also too much emphasis on "Keybed" and not enough on Playing talent & skills IMO way more important..
what makes you asume piano players will not like arranger styles... Yamaha allready has a whole line of Clavinova CVP with as much arranger on board as your PSR 970. Casio is putting a small arranger in everyone of their new stage piano's
it doesnt matter what kind of keyboardplayer you are, piano based, synth based or organ based... arranger styles are fun for everyone..
You are having a hard time placing your mind in someone elses shoes.. why wouldnt a piano player, espescially with full keyboard chord detection be extremely happy with some arranger styles on top of his playing?
Your opinions to often sound like : I dont want/need it, so noboddy needs/wants it.