Who knows, It works for Transition bikes quite well
The upside is they would sell more bikes/frames
Personally i wont be buying another complete e bike, i want a frame, motor and battery only
My 2020 Levo Expert cost me 6K+ (great discount from Chris@Berkshire Cycles)
The spec is poor for the price and some of the components arent fit for purpose (wheels) Ive had to change everything apart the saddle, rear mech, cassette, shifter and chain at a cost of 2k+
In 30+ years of buying and building up my own bikes only the 3 last bikes i bought have been completes (all Specialized e bikes) every other bike Ive owned Ive built to my spec from a frame only
Specialized offer their normal frames as a frame only option so cant see why they cant do the same for the SL or normal Levo as a frame, motor, battery with the associated wiring/TCU