This was
I like the idea of FFB but it has always been a niche within a niche.
Racing sim wheels started the same way.I remember Dave Kaemmer of Iracing stated many moons ago that FFB would never work as the latency of PC to wheel can never be diminished etc etc.Just look at sim steering wheels nowadays.
That said I would pay for a gimbal that allows us to run an extension and gives a tight progressive feel with no flop.By tight I mean it would be tiring after awhile.
There's a few major differences though:
-Racing wheels, by nature of only needing to simulate force on one axis, can be more accommodating to different mount methods based on their simpler design. Putting the motor ahead of the wheel allows far more room for the electronics and mechanics.
-Flight sim sticks need to be mountable on desks or sim pits, and would require a more intricate design to allow for force on both axis. So you need a smaller foot print for a more complicated design.
-You need a wide range of motor power options, as folks with stick extensions (and more potential leverage) could burn out weeker motors (but possibly have more room for motors) but desk mounters need less power and a slimmer design.
And that's in addition to the software issues highlighted by sokol1.