I'm not trying to say it's great. But can you imagine if it progressed at the rate you imply that would want it to? A level 200 would have an INSANE advantage over new players and lower levels. The levels go beyond 200, I've seen. We would be talking about % in the hundreds. It's already bad enough there is an advantage over new players in the double digits, but you, OP, want to one shot people with punches and single bullets.
I would desire even LESS % advantages, and you are complaining about wanting more.