As I have been looking at purchasing either a Mk2 KeyLab 88 or a StudioLogic SL88 Studio/Grand, I have noticed that the KeyLab seems to be missing a level of customisation around the velocity/touch. It would add significantly to the capabilities of the KeyLab if it included:
1. more customisation of the velocity curves, including custom curves that could be edited on the PC;
2. adding customisation of the key balance (both between black/white notes and over the keyboard) so that you can manage any keys that do become more/less responsive over time, and also adjust for playing styles, etc.
I would hope that these are things that could be delivered by firmware updates, in which case, I would strongly suggest considering adding these capabilities - at least to the KeyLab 88 Mk2.