"average" capability for NanoTimer

I have a NanoTimer subclass that adds methods for getting average FPS (for default or specified number of previous frames) and average since last mark (defaulting to first updated frame).  In my experience average frame rates are much more generally useful than the instantaneious rates returned by NanoTimer.  It doesn't matter if my last frame happened to be at 200 FPS because GC and context switching happened to be caught up, if my average is 10 FPS.

So, I open up the phones here, about whether jME users think this would be a generally useful feature for NanoTimer, should be subclassed (if for some reason you don't want the capability by default), or the usefulness just doesn't justify new code in the jME baseline.

If nobody particularly wants it, I'll just keep it to myself.