I've actually been a Corporal+ for close almost four years.
Everything you just said has been a complaint for as long as I can remember. Look through the threads for further information lol
+1 to getting rid of the ratio.
There's a reason behind that. Show any sort of leadership ability as well as actually play cop often enough and you'll get corporal. In the grand scheme of things it really is not that hard.
Sidenote: Don't be a complete troll