I remember playing in that arena, had a good enough win streak to level up a couple times which made winning even easier until team changed from people dropping out and some real novices taking their place leading to a loss.
This leads me to the main issue with those lower level PVP areas - you still gain experience while doing them so once you level up in a match and then lose a match you can no longer enter with that character.
People will also get run to Droks for max armor etc. so binning the character is expensive to then create another to level and get there.
Nice idea but too many issues I feel