While I'm happy to have something else to work toward in Frontlines, since I'm already level 43, I also have to agree that this is a weird reward to tie to PvP. I guess they wanted to encourage people to try it out, who wouldn't otherwise?

Though as someone who doesn't typically enjoy PvP, I really have to endorse giving Frontlines a try...it can be really fun if you get a good group, and it's also a great way to level certain kinds of desynth.