Diiesel, I knew would a long time ago but I guess I'll shed my opinion on the bracket if you care.
The current state of the bracket is a shadow of what it once was. Granted; we still have que pops on a "decent" regular basis (high times generally, when everyone is on). Games will pop, generally like in the past they lean toward one side or another. Its not a matter of skill from what I've noticed but; in the past it is like it use to be in the ages of the burning crusade and vanilla. However; despite the lack of appropriate gear, at times the games can be very fun. I personally have a level 15 priest who can out heal 19 healers due to stat scaling! I am having as much fun as I did ages ago, on a class I haven't played since WOTLK. If you want something with more activity with a "decent" 19 vibe or feel, then by all means roll a 24, you can go full BiS literally any class and faceroll in pick up groups/randoms. You can even 5 man or premade to farm honor if you desire!
tldr; 19s are fun, I'm having a blast, 24's are more active and I'm sure you'll have a blast there.