Have you bought any DLCs for Advanced Warfare? What about microtransactions? I have only bought the Havoc DLC, and I have had fun with it so far, but given the small amount of people who have it on PC and the problems it had at launch (we got the content a week after we were supposed to get it, AND it wasn't all available to us because of issues on their part), I don't think I'll ever buy another DLC for this game again. As for the microtransactions and the Armory slots/ Class slots DLCs, I couldn't be bothered. I have enough as is.
I haven't bought any DLCs since most of them don't really offer anything game-changing, it's mostly cosmetic or small bonuses which just isn't worth the money to me.
Well, I think that if you need something game changing, you should definitely give the Havoc DLC a try. Not only does it add 4 fantastic and fun maps and a fairly good laser weapon, but it also gives you a whole new Co-Op game mode - zombies! Sure, it might not be the original Treyarch zombie experience, and it might feel like the map is a bit too small, but it's still really fun, especially with the exo suit.
Zombies with exo suits are terrifying the first time you encounter them, especially if you don't seem them before that moment.