I feel like I enjoy COD for the first month or two that it's out, and then I end up developing a hatred for it because I run into the same issues with lag, hit detection, and spawn killing.
I don't care that people camp in this game (I slow play too because I primarily snipe), I don't care that people use noob tubes. Those are things that are built into the game, and you can ultimately control the outcome of those encounters. Lag, bullet lag, and spawn killing have been present in COD for as long as I can remember, and while I don't expect them to be completely and totally eliminated, it feels like it's only gotten worse as the years have gone by for this franchise.
If they could fix those issues or at least reduce them down to acceptable levels (as in one or two issues every several games, if not days), then I would buy this on Day 1, because I would finally have something to play with my friends and I was actually good at COD when I played it. Until then, I've sworn off this franchise and won't give them any more of my money, unless you guys and my friends are able to persuade me otherwise.