RE: If you could change anything on.......
I think the question should be "What would you change and why?"
I have a NAP QuickTune 2000 Dropaway and I really like it, but I think that if they used a rope instead of a cable it would drop away a little faster than it does now.
Or I would say that Alpine should work on their Bear Claw 5 Arrow quiver. It's a nice quiver, but it doesn't fit snug into the mounting bracket like it should.