Hi,
if I was a die hard yamaha fan, just because they only have 61 keys wouldn't put me off. I was a technics user for many years, only had 61 keys also.
I use full chords & pianist mode. I also have 61, 76, & 88note keyboards ( 88 notes is my piano, to which I midi my keyboards or my laptop/omb arranger software) if I want the full piano experience haahaa. Mines only for home use so using a piano as a controller isn't a hassle.

Personally, bring back arranger modules, only they obviously weren't popular either.

best wishes
Rikki