Like from one Death/Capture to the next. Maybe even display your current streak with the perks in the Hangar.
I like tracking Kill/Death ratios (Either mine, or checking them for guys I'm flying with), but that can be misleading if you are looking at the score of someone who just wades in, HOs and picks a few and then gets killed. He'd have a good ratio, but actually wouldn't be all that reliable as a wingman or flight leader, and would more than likely get you killed without even thinking twice.
I prefer to fly like my virtual "life" meant something, which means getting home and landing (or at least ditching/bailing in friendly territory) if at all possible. I try to keep track of my current "streak" over time (which admittedly doesn't go all that long, 15-20 kills tops) but that can get kind of hard when I go several days without flying and then come back.
