So I'll be quick. I'm really frustrated actually. I just discovered that my lvl 14 disc priest, ready to be twinked, can't join normal bgs with its exp locked.
I searched on Google for some kind of bug because I didn't get it. Then I've found that indeed, Blizzard doesn't like people to twink and own in bgs (that's why they added in the past experience gained through bgs).
So they made a kind of matchmaking system that separates "locked-experience-players" from leveling players. If someone locked wants to enjoy a lvl 10-14 bracket have to wait for hours or the queue may even never start.
1) I know that, especially new players, may get gaming ruined by being ganked by twinks, but then give a reason that why full BoAs that have no exp locked can join and massacre everyone.
2) A lot of people twink because they prefer to play relaxed with a few abilities instead of 5 filled annoying action bars.
3) Separating bgs would be nice for the balance and to prevent the ruining of new players, but you just can't find queue as twink. Would be awesome a server dedicated to twinks of various brackets.
Do you see it nice that Blizzard isolated twinks? Remember that twinks pay the game like any other player, and they just use what the game offers, so it should be Blizzard that instead of isolating players should balance the game.