"arrows must be cut the exact length" And why is this a problem?
How many "Average Joes" do you know that are meticulous enough to make sure that their arrows are cut the perfect length every single time they have new arrows made up? Not many.
"you can not creep in your draw or overpull" I find this a plus - it helps your form and consistent anchor point.
Sure it helps with a consistant anchor point. Then get all bundled up in your camo gear that you use during the snowy season and come to that perfect anchor point with out creeping or drawing too far after you have been sitting in a metal tree stand for 4 hours with temps int the teens and the deer is 15 yardsout fromyour 20 - 25foot high tree stand and you are shaking like a leaf from the cold.
I know I don't want my hunting gear to be that critical when I have to make a killing shot on a a buck.
I think it would be a great rest for the target archer but I IMHO it isn't a good rest for the majority of hunting rigs.
Some people like to shoot a longer arrow.
That's another good point. I much prefer to have my broadheads out in front of my hand rather than behind it. Kind of a little safety thing for me.