Ok now that we have established that track up is the only correct thing to do with your map display and North up is wrongful, perhaps an unintended error or something... I vote full compass rose for the HSI, because it lets you see the reciprocal of the heading you are on. Very handy for procedure turns, patterns, and so forth. Also, some HSIs have rose-only presentation because they use the rose area to display a small moving map (Sandels).

USMC- what is better about PARs using an arc display? Wider degree marks?