Two suggested features regarding gearboxes:

1. Add more numerically higher gear ratios and gear sets to the medium and large gearboxes. Since gearboxes don't have torque limits anymore and haven't for some time, the larger models of gearboxes don't have much use. Maintain current gearbox ratios to maintain compatibility to existing creations that use them, and then add much deeper gears ratios to them for ultra efficient 5% torque loss gearing as compared to stacking 1x1 gearboxes. This would be great for steam and other applications that require a lot of torque multiplication/reduction.
2. Add more than two switchable gearsets to them, have three or four switchable gear sets within one gearbox, with addition control nodes, or composite. Once again, making the 3x3 and 5x5 have some utility and better efficiency over the 1x1 for applications that could fit them and tolerate the weight.

Cheers,

Stay Positive.