For example, F1, F2 and F3 (for me) does sound (mute, decrease and increase), but is it possible to change what it does (this is an example, don't flame me for this)? Are there software parties for this? And if you can't do this on vanilla Windows, this should definitely be a feature!!
(Oh and also the Fn + F1-F12 keys, can they be changed if they don't already have a function tied to it?)