Leupold and NF should not even be said in the same breath.
Regarding the NF 2.5-10x42, I've used one extensively while hunting. Here's what needs updating.
1 - The parallax is too sensitive, I'm fiddling with it more than any other scope I've used. Just ditch the parallax adjustment like the old 32mm, that'd be great with me. Can easily get away with it on a 10x.
2 - low profile capped windage turret
3 - locking elevation turret
4 - 10 mils per revolution
5- better illumination (currently dims the further from the center)
6- Lower profile illumination knob. The dial on the old 32mm is perfect, duplicate it.
7- better glass.
PLEASE KEEP IT 30MM!!!
SFP on a 10X hunting scope is preferred by me. NF reticles disappear on lower powers.