Blizzards reason for limiting duel spec in BG's.

[TheJ3ster]

Is there one? I really can't figure out why. It can't hurt that much to allow people to use it. After all it does cost 100% mana.

It sure would be nice to go heal/DPS when there's too much of one in smaller BG's.
Hell maybe even make it so We can only do it at a Graveyard.

[Tibarn]

People use their duel spec all the time in bgs. After all it is PVP just like dueling.

[Jeddite]

Hypothetical answer: rated battlegrounds and pre-made v. pre-made

Similar to when Blizzard removed gear swapping in Arenas back when Warlock/sPriest was a powerful combination in 2s (before resilience had any affect on DoT spells) to prevent players from equipping a heavy shadow-resistance set when the arena doors opened and Team A realized they were fighting Team B, Warlock/sPriest.

Blizzard wont want to allow teams to switch specs in battlegrounds when they realize what their opponents team is. This would, hypothetically, only be a big deal in rated battlegrounds, pre-made versus pre-made, but the system would not be able to "allow" spec-swaps for PUG-v-PUG but "disallow" spec switchs for team-v-team