I'm on board with simple seat designs to keep weight and complexity down, yet we are all different sizes, and I've always hated flying on planes because I'm not "average". So what about maybe 3? seat options for the specs that don't fit our range of body shapes and sizes easily, then maybe just a lumbar adjustment in each?
Sure "tuning" a vehicle for one driver does have its drawbacks, but if we can order and replace parts easily maybe swapping seats can be as well.
Seats must be power adjustable with lumbar support. Don’t like seats that sit low. It’s harder on the hips as you age.