Casters

It seems like the general opinion now is that BLM is garbage for Feast and SMN still has a major flow in that it has no defensive skill whatsoever.
A question for SE; what did you think would happen when you nerf to the ground the CC tools of a caster who has long cast times? You didn't even bother giving them something else to compensate, and you did the exact same thing with SMN.
I don't really know what should be done for BLM, perhaps reducing the cooldown for Nightwing, for a start.
For SMN please do something about that decorative skill that is Misty Veil, either reduce the cooldown to 1 min to make it anywhere near useful or make it a defensive skill of some sort, a SMN who gets focused a lot is a paper target, and their defensive CC isn't really helping.

I tend to feel useless even in frontlines as a black mage. Sleep just feels useless now, unless we're a preformed group and focusing like hell on that one guy while the healer's slept for the 7 seconds, assuming they don't purify. Oh hey, a bunch of enemies, I can attaNOPE THEY MOVED OUT DURING CAST. Oh hey, a single straggler, I can attaNOPE SCATHE IS ALL YOU CAN DO (except the procs obviously, but those literally require you to be lucky unless you swiftsharp something). Oh hey I can claim this flaGODDAMNIT YOU #$%^ING NINJAS WITH YOUR HIDE. Yes, ninjas are my mortal enemy in pvp. We can't even do diddly squat on the goddamn ice because oh noes casters are standing far away in safety but bards/machinists aren't a problem if they're doing that too. We can't hunt down enemies. About all we can do is hope someone runs up close to us and attacks the person next to us so we can get the casts off on them.

Black mage is made to turret, and unless we get to ride in on the backs of tanks like mobile artillery (while that would be incredibly awesome, that would also probably be incredibly unbalanced), we can't exactly turret unless we're in the middle of enemies. What I kinda like is those little fortifications in seal rock that you can climb up on. Gives you a little safety, but you can still be attacked if they just run around. Sadly, I don't get much of an opportunity to be a pewpew turret there.

Then again, I haven't mastered the art of pvping yet either (experience only comes with time), so maybe I'm just a derpy black mage that can't pewpew right in pvp.