frontline is realy more friendly for new player who want to learn, when you enter you play for 10 to 15 minutes, with this fact i can understand 4vs4 can be annoying to anyone who wan't to starting play pvp in ffxiv, also wolfden queue is long and being kill in 15 sec and requeue for some minutes before doing it again don't make people learn anything.
I guess someone already used to play front would have learn enough to enter a wolfden and not die in 15 sec. But reward and the game times don't worth the queue
Well frontline is better for starting to pvp,
but there is also point i don't like too much in front : map is a little too big we should encounter enemy faster, i don't like the drones and nodes

If you would have ever played Warhammer AoR you would understand a little bit about how a PvP server works. (certainly a game is not a other, and i din't play this one)