Its on the scheme as the resale value after 3 years will be quite high. I doubt there will be ICE BMW’s added as Motability are encouraging everyone to go EV.
The larger battery 40 is only roughly £1500 more and is the one lease companies are pushing and the choice of private buyers. The M sport is a little more on to of the base spec sport aswell.
BMW will have stock of the 35 model and although very much welcomed on the scheme, I can’t see it being on long after they have shifted that stock. It could also be that BMW will ditch the 35 as Audi did with the etron.