Premades is the worst idea for instanced PvP in the world. If this game turns into another Pre-made vs Pug roflstomp I assure you I will quit just like I did Rift after 2 months.
The whole notioon of instanced Battlegroudns is for "instant gratification" for players with not much time to organize, so if you are allowing organization to trump instat action then you defeat the purpose of having battlegrounds in the first place.
I'd suggest making a friend or two and queuing up together. This is a social game after all, if you have a problem with four players beating your team you should adapt.