Honestly, if they don't separate the level 50s from the lower levels soon, they'll have a lot of people leaving before they ever hit 50. Right now, it's not really fun to be a lower level going against level 50s. They have all their abilities, plus access to the best pvp gear. Anything lower levels can do to them, is pretty much void at that point.
I've been up against all level 50 groups and they dominate the entire match. I've seen several people complain about it. I know they are going to eventually separate them, but until they do, a lot of lower levels will quit PvP'ing all together.