Can I ask why you want to do this? I am working on something that maybe related.

I am trying to arrange things that selected keys will always effect the character in a partyFrame Slot on my leaders UI

eg

F1 any of my tean Heals the first Slot I see on my leader UI
F2 any of my team heals the second slot on my leader UI
F3 any of my team heals the third slot on my leader' UI
and so on..

and obviously allow the setting of the leader dynamically..

Is this any good?

It will not 'hardcode' the action (ie Heal above) and will not be HotkeyNet specific. and will not be key specific