SQUID sensors would be very feasible, with increased sensitivity. I just learned that extremely directional transceivers would be possible due to some weird quantum effects. Probably propulsion would be affected by higher efficiency motors. So it's a huge deal if it's real.
Actually, going from 96-98% to 99% is still huge. Assume the lower efficiency motor is 100W. You waste 2-4. Presumably you can dissipate that amount of heat.
Now, the same form factor can do 200-400W and be ok.
So it doesn't change the efficiency of the system (we still use a bunch of wh) but it dramatically changes the form factor of the motor!
