i believe its not that simple...
with a game like cod that is completely based around leveling up, i dont think anyone would play it if nothing counted... save for a few of us..... but then it would likely be removed..
i personally got sick of all the tryhards and cheap tactics that will never go away in every other mode.... infected was great when it first came out, more balanced for fun then any other mode..
even now.... i think i've seen ONE moab on a TK map, and that guy earned it!! all of the crap still only happens in non-tk maps, the rest are perfectly fine imo..