The only reason I've never made a hunter (and the reason I never made a warlock until MoP) is because I despise pet classes. I love the idea of physical ranged DPS but I don't like pet classes. My idea is give MM hunters an option to get a buff to ranged damage in lieu of a pet. Say a pet does 5% of your damage (just a random number, I have no idea how much dps mm pets do), you could choose to either have a pet if you like pets or 'sacrifice' it for a 5% buff to ranged damage. It'd be similar to affliction warlocks are now where sacrificing your pet is pretty much the same as having a pet(in most situation) dps wise. Now that there's no minumum range on bows I see no reason not to have this option except you'd get some QQ from people who love pets and think everybody else should too. (You know, because god forbid people have a choice in playstyle) Hell, they could even make the sacrificing option a slight DPS loss in exchange for not having to manage a pet.
EDIT: I DIDN'T ACTUALLY MEAN KILL YOUR PET FOR A BUFF. I used the word sacrifice because that's what the warlock ability is. I meant a passive aura that activates when you don't have a pet out or something.