Like most runners (and I use that term very loosely) there are certain routes I run on a regular basis. Sometimes my times are ok; sometimes I'm blowing like a factory chimney, and could probably walk quicker. However, overtime, each route becomes very familiar and has certain points on the way, where you gauge how well your doing against the clock.
So, wouldn't be cool, if you could overlay the run stats on Nike+ over each other, so you could see where you're quicker, and where you're slower. Maybe even annotate where the landmarks are too.
By doing so, Nike+ could then calculate your possible best time and pace for the route, by showing your best pace, across all runs, at each stage of the route. I've tried, quite badly, to demonstrate this below. So, Nike, if you ever get to see this, please add it to your dev' path. I don't think it would take much effort to make it work, and it would help give every runner that reachable goal based upon their own personal performance.
An example of three graphs, of a short route over-layed on top of each other.