The one thing I hope
Leupold never changes is there locking reticle focus. I absolutely hate the "Euro" style ring on the back the takes itself out of focus during the day while hunting. To me, reticle focus is something that is done one time, then you never dick with it again. Therefore, it should be locked and forgotten about.
Also, like was said prior, I think Nikon has very bright, crisp optics, but I hate the black donut you see when you look through them.