There is no easy answer. You can see by the comments, no matter what Motability does, there will be tears that they are giving money back.
The good condition bonus works well. You get cash back at the and of the lease.
By far the worst thing Motability CAN DO is use the money to lower the AP, that will cause undue stress to the nearly every member as they will accuse Motability of ripping them off.
If a car is on the scheme with NIL AP? Ouch mamma….
The AP and availability of cars is due to supply and demand.
Manufacturers are NOT gonna take the haircut Motability demands, so they are off the scheme….at present, but they will return.
No matter what, It IS Motability Scheme, and you play by THEIR RULES.
Or go elsewhere and try and lease a car for £240/month and see how far you get.