Sadly you can't really do sharp nosed cars anymore due to the pedestrian impact laws (cue a hundred posts to prove me wrong!) and neither the 4 or 5 pots will pass emmissions so whatevery the come up with would be quite different.
Has the coupe really got enough recognition (outside these hallowed pages of taste and discernement
) to warrant resurrection? Personally I doubt it.
So, I reckon Fiat have pretty much got a blank canvas to play with. RWD would be a bold move these days, but 4WD should be doable.. I'd reckon on a 4wd lightweight (as far as modern crash standards allow) with 250-300bhp and a high waistline based on a current production floorplan to save costs.
So, lets wait a few years and we'll see if I'm really Nostradamus