This was always a ton of fun for me when I created any Alt. I would find the absolute best gear possible, put all the best enchants on the gear, and then do endless BGs until my level increased to the next bracket.
With the ability to stop EXP gains, I think they should allow those characters to still Queue up with the rest of the people gaining experience in BGs. Why limit ones ability to queue with other people just because you turned your exp off? Those queues are ridiculously long, and something needs to be done to accommodate those people who want to twink it up. Why did they even put those people in a different que in the first place?