It would be very useful to be able to take any live keyboard oriented function and be able to remap it to and key combo, a midi-sequence, or perhaps nothing at all. Just like in Logic Audio. Speaking of which I've remapped my arrange's horizontal zoom in/out to Live's +/- key combo.. causes less hassles when working between the two- at least in the home studio.
But some key commands, I would care to disable completely- and no I don't have fat fingers- yet! But with increased age, who knows??!