You do realise that alot of Sla bikes are barely functional without their assist especially in hilly terrain?
For legal purposes defining the cutoff point is going to be a nightmare?
I personally have no issue either way but think that anyone trying to seperate the 2 are going to cause problems for all.
For arguements sake if I fit an 8 speed hub to the drive on an e-scoot and some else has a single speed e-bike with long range sla's which one is legal under your definition?
Oh and all of them that I have seen have pedals that do work.