Better cables, optical switches which don't require debouncing, I think qsxcv showed that while there is not mcu smoothing there is some sort of extra delay that depends on the report rate compared to what is possible. They could also just make more shapes.
Edit: Though since I haven't tried these cables yet. Maybe they will be fine for me. Braided vs not braided no longer matters to me since I cant play if the cable touches my pad or deck anymore. Only flexability and to a very small extent weight matter to me.