An 88 key TOTL arranger.... that would be my dream...
25-35 lbs plus graded hammer action....
If Yamaha....I'm not holding my breath. Yamaha charges $15k or more for a piano with very basic arranger functions.
Most arranger players. Are home players, which does make weight not an issue...
On top of that, technollogy is at the point where they can make fairly light high end 88 key weighted hammer action.... casio px-5s action and keyfeel are top..