in fo3 and fnv you could track nearby npcs/creatures on your compass, but not in the skyrim or fo4.
but. what stops us from implementing such a functionality? do we really need the g.e.c.k for it?
look at the recon scopes functionality: you can mark enemies on your compass by aiming at them. i reckon there's not much changes need to be made to extend that effect to friendlies and neutrals. maybe a little more changes to make that effect work automatically without aiming at anyone. but it is possible, maybe even with tools already available...
your thoughts?