I think you underestimate what can be done to control weight transfer, droop is a very useful tool for this.
However I still don't see how altering droop will control wheelspin, assuming that it is not set wildly wrong in the first place.
I cannot comment on the last part of your post as I don't understand the sentence, maybe I'm stupid, it would explain why I don't understand the droop thing either.
See you at Snetterton, I'll be the person playing with droop screws to tune my weight transfer lol.