I would like to be able to track. either they implement this option or not, if they put prints in game, it shouldn't be very dificult to mod this feature. so, yes I would like to see prints implemented.
That would be an awesome variation of Detect Life. Wouldn't be as useful as Detect Life if they person is in range but if the actual person isn't in range you can see the tracks of everyone who has walked there recently. The brighter the marks are, the more recent the step is so you know what way they went, just like a heat signature.