I agree with the larger 1500 cab, but with a flat load floor instead of fold flat seats.
3500 Rebel as a package instead of a trim level, with 285/75R18 tires (35’s) and the Power Wagon front locker
Upgrade the 3500 SRW RGAWR to 8000# and GVWR to 14000#
Remove the 12” screen as a requirement in the Level 1 and 2 packages. I like separate climate control dials
ZF PowerLine 8 speed with the column shift, not the rotary dial (
https://press.zf.com/press/en/releases/release_55747.html)
Get rid of the push button start or add a true accessory setting without a timed shut off
Enlarge the overhead console to include a sunglasses holder
Part of me wants a linked, full air rear suspension on the 3500