Im guessing the specs are 2 MPs each have their own controller 750 watts on both hubs using a single throttle wired to each controller in parallel.
Double the possible NM and torque, less efficiency but because the hubs are not pushing it, the loss efficiency for the gains IMO are acceptable for such an awesome off roader.
I assume because of two motors you could use 2 X 20ah packs and the extra weight from an energy storage point of view is not such a big ask.
This bike with two motors and 2X20ah Lifpo4 batteries would still weigh less than my 48v 24ah SLA bike with a single HBS motor and should be able to go further distance and have 3 times the power.
Its top speed should be a few kph over that of a single motor.
The amount of heat put out per motor would be very low giving back some efficiency especially when doing high load work outs.
On a sturdy frame the weight distribution should be nicely balanced. Put one battery on the frame triangle and another on a rear rack, Hell try put both batts in the frame triangle.
Some thick slicks should hold up on fast corners.
2 wheel drive for maximum traction going up lose rocky gritty grades.
You could almost name your grade and she gets up on it with little drama.
