Actually. If they add a further gladiator set, they should make it available only with arenas. Arena sets are motivating, but getting them with just voting is lame.
Also, arcane spec can be pretty dangerous if you are in wsg. =) However, i am going to test more then one spec. Simple enough.
So far in investigation, i found out frostbolt's damage is bugged, arcane blast does not stack like it should, living bomb does not work appropriately. So there, you can see openings in every spec. Lets hope in future plans, things will change. If not, i am bringing an unusual but dangerous talents, however, i never did it before, wanted to test, but i am lazy. So here is a chance to test it. Who knows, might turn out pretty good.
But still, i think mages are in pretty bad situation if they are stuck on just spamming arcane missles. Maybe you shouldn't blame them, but the bugs who counter their origin specs. =)