I think that sounds pretty awesome, and I would love to play with my King krush and not hafta be BM for it, though I don't mind clicking a button to switch my spec and whatnot when I'm soloing.
Anyway, I have a bit of an idea. If that were to happen; Instead of just letting BM spec hunters get a second ability for their pet, why not change the last ability in the tree to allow.. Two pets out at the same time. Now before you say "ew no", let me explain a bit..
For one, the DPS would be halfed between them. So even though there would be two, they'd be doing the DPS of one.
I do realize this would be a bit OP with the pet buffs, but chances are there is a way to make it so when you have two out, only one buff from a pet is active (Of your choosing, or the first one you summon out. Or it could even work off of Acherontia's idea, kind of; one pet would have a buff, and the other pet would have the other one)
I gave this idea for the fact that.. BM would then still be unique to the other specs, but in a slightly different way.
Also I figure that Blizz could implement something along the lines of only allowing a certain secondary ability to go to certain pets, or just "gray it out" in a way. I mean; if they can already make the pet trees require a certain thing before being able to learn it (Dive, and the ability right under it, for example) then they could do something like that - A lesser ability of say.. web wrap (The pet abilities are slipping my mind at the moment; only one I could think of.. xD I apologize) would be one of the "required" things for "BOK" or "Fort".. or something along those lines.
Once again I apologize if I kinda rambled on.. And; if I misworded things, it's six in the morning here.

Just wanted to add my little bits of ideas before I headed off.
