Improve the water resistance of the main knob and control knob. I load it on the top of the car and when I go at 100 / 120km / h and it rains it could be that water will enter those components, in addition there is also the air resistance and those components are not made to resist those speeds.
I used vulcanized tape and also made sure to protect the control cables, control knob and screen much more, the control knob is very fragile to withstand 120km / h of air, and the screen simply removed it.
Personally I think that the 48/36 chainrings could be changed to a 44/32, even with the 48 hight mode and using the 11 gearbox it becomes very heavy for the legs, 48.2 km / h is only usable on descents. Using the 48 with a 13 pinion we have a very interesting 40.8 km / h with 80RPM on flat terrain without having to use a great effort, if you have a 44 x 11 you have 44.2 km / h at 80rpm, that's why I think that 48 should be 44 teeth.
I also think that in an ebike having more than 11/46 of pinion gear has no objective because you have added the newtow drive-mid (70/80 newtom).
If I had to look for a new model to travel long distances, I would pick this one with pwx2 and 44/32 double chainring and front and rear suspension.