There are several active guilds on Icecrown and Lordaeron that have level 60 twink players. The battlegrounds are fun and competitive, but they are sabotaged by level 69 twink players who see us que and try to ruin it. Blackrock made the option to introduce level 19 twinks. I think it would prove to be very beneficial and warmane would see a lot of participation if they also added a level 60 twink option on Blackrock.