That sounds amazing to me. Dwight is one of the best pinball programmers out there as he codes moments and that is exactly what a pin like Back to the Future needs. Back to the Future pinball needs be heavily story based (versus the main focus being points) and I can't think of a better pinball programmer then Dwight to pull that off.
With all of that being said if Dwight or anyone else at Stern is reading this please make the game crazy deep! Hopefully the pin is based off of all 3 movies. If that's the case an approach of 3-5 (please 5 lol) objective based modes + 1 mid wizard mode per movie would be nice to see. Top everything off with a super wizard mode.