Regarding the multi-kb thing.......that is interesting........I need to give that some more thought...

So, having caps lock, num lock and scroll lock plus combinations would be perfect.

Is there a way that to stop Numlock making the numpad keys the direction keycodes? or is that a hardware thing. In other words, I would like to have numlock change the meaning of F1-F5 and leave the numpad keys unchanged. If this is impossible, which the more I think about it the more unlikely it is to be possible, then it will still be fine if I can use capslock and scroll lock.

Would this functionality be hard to implement?

By the way, a solution to feedback could be adding extra tray icons I know I have a wireless keyboard where the software does this for capslock and numlock