I'm less worried about classbalance (a bunnyhopping SMN/SCH team is hilarious but FOTM will change sooner or later) assuming Square Enix will balance the PVP aspect of the game more often than the usual three month content cycle. They need to adress fundamental things such as "Arena Frames", fix the "Bunnyhopping/Desync" bug/exploit, add an optional "Ready Check" for both teams to bypass the 2 min wait and such though. Meanwhile until things get fixed this whole PVP thing is a decent timekiller/grind I guess, nothing more and nothing less (assuming you are used to PVP in other games).