Is the debate here not getting down to one that could be transferred to the the car world?
Yes the world beating BMC Mini 850, with transmission in the sump etc was reliable, fun to drive, handled well and was economical on 3 star leaded petrol as well as being easy(ish) to work on.
Take your BMW built Mini, a completely different beast, far closer tolerances in all the manufacturing processes, as well as being a far more capable car all round.
Not sure that we want buckets of sunshine being carried by aircraft designed at the same time as a BMC Mini...