The reason why I missed Doubles so much was because of the competition. I know the person/people I play with and so there is communication NON STOP and games can quickly get "heated." With every other playlist offered at the moment, I never get hyped up for a game since I usually find myself running alone and pairing up with mic-less players (boring). I'm looking forward to Slayer Pro when it returns btw. Nothing beats winning a 2v2 (4v4) match with my bros and having the oppenents talk smack and invite us to a custom game, only to get slayed again. THE BEST FEELING EVER (or close to it).
That's about it. Yes there is camping and hiding, however that only elevates the pressure. I dont tend to see this much as I play Doubles in Halo 4, ONLY WHEN PLAYING PRO. That's when it will get annoying, but there are so little places people can actually try to hide on the maps that we find them quickly enough. Not like Construct as you mentioned (I remember plenty of games like that).