when i first looked at the bulletin detaling specialzations all i thought about was: which was the best perk, which would i use.etc
But know i had time to think about it, specialzations isnt all about the perk. when you enlist in a specialzation you unlock things like armor, visor colours, weopon skins etc. These specialzations are for people to not get bored after reaching the max rank. This was problem in reach because when you hit inhertior you had nothing else to do. I cant wait to unclock the epic new wepon skins, etc. The perk is not that important anymore.
Specialzations is a great new feature just like everything else. Halo 4 will be the best game ever. Cant wait.