I dont think they'll be like MW3 spawns. Unlike Infinty Ward, Treyarch developers are extremely skilled in map design and spawn algorithm. You can see that by their track record in WaW and BO. You shouldn't worry about that aspect of the game to be honest because in: Treyarch We Trust
Fuuny thing is you know in the reveal trailer towards the end when its says: "The Future is Black" and it fades into Black Ops 2. I found that to be a knock on Infinity Ward telling them The future is Black Ops 2, you F'd up and now we are the GOLDEN BOY! or is it just me?
Don't get me wrong I love all cod series but somehow some of these players still gets teams in spawn traps sometimes, cannot explain the frustration of joining a game to find dogs, helos, and players spawn killing you and the games reluctance in spawning the you somewhere else. (Summit is a really good one for that in bo as well as multiple mw maps)
My view is that the BLOPS spawns were actually very good. The best of any CoD yet if you ask me. MW3's spawns are horrible because of the tiny and cluttered maps with a mentallity of keeping the game fast-paced. Unfortunately, the two do not go well together to create epic spawns.
All they have to do is bring back the BLOPS spawns and I'm happy.