Preach it brother.
As an american, I am going to disregard your opinion in favor of imagining you dancing in lederhosen on the other side of the mic when we chat.
I really doubt this is going to be Pay-To-Win anyway. They have emphasized through all their interviews that they kept the simplicity of zombies intact. No XP system would break that, so i am assuming it is just going to add versatility to gameplay. It's not really a competitive game anyway, except for grief, so I doubt it will be like "race to level 50 so you can roll into a game invincible on round one." I'm sure the Double XP stuff will let you get stuff faster, but i doubt that the "stuff" that you get will uproot the zombies we know and love. Treyarch themselves said in their recent appearance on that Sony interviews with creators thing that the inspiration for zombies and the core element has always been that Cooperative defense is always the most fun co-op in their opinions. Key word: defense. This has always been a constant in a game where you can't win, but they are definitely not gonna give you a full loadout on round one. I trust that XP, whatever it does / unlocks, will add to the experience without killing the simplicity of it, and won't turn my friends who are higher levels into OP killstealing whores.