Yay! I've reached the maximum rank everything is unlocked and I get ten cac slots! I think they add to add something more, I remember black ops 1 gold camo. That was fun.
The prestige symbol is pretigious enough for me. Overrated all comes down to what your idea or opinion of 10 prestige should be. For me it's just a symbol that you've played enough to go through the ranks 10 or 11 times.