I've mentioned this in the other thread, but to make it a little official I'd like to suggest the following things:
1. Bayonetting your enemy to the body/head should outright kill.
2. Pressing the Melee button (default V) should immediately stop any current actions, make you stand and level/ready your weapon.
3. The ability to hip shoot your weapon in melee mode, perhaps using a third button. (Many pc mice have thumb buttons or a clickable scroll wheel)
I know melee is very early days and you may have much of this planned but I figured I'd make the suggestion anyway.
Thanks.