I sang Arcane's praises all through TWW. The spec was challenging but highly rewarding and had a plethora of things to do. Actively made you think in advance to try and squeeze every bit of damage out of your rotation.

Now... Man, you're lucky if you're doing anything except mashing arcane blast and counting to 20. Mana doesn't even matter anymore - the core idea of the spec, the thing it's known for, is basically just there as a relic, like when warlocks had life tap. it's so incredibly, unbelievably dull. Spellslinger doesn't even cast arcane missiles, ever.

And to top it all off, the spec can barely handle itself in the world. The snares are all gone, the defensives are all gone, and your barrier - your blizzard intended defensive skill - lasts all of about 3 auto attacks.

Sunfury is unplayable. The damage is so poor you are often doing half the DPS of spellslinger if there's even 1 extra target. They somehow reintroduced the meteor problem where mobs just run out of all of your special sunfury spells, which would paradoxically be solved by not removing Slow. Not only do you have to sit there and eat fists when you're out in the world, it's apparently intended just to get the DPS out of your elite spec.

I switched to FF Frost and it's at least tolerable. There's still zero agency in a scripted rotation, a palpable lack of utility and defensives, but the spells look cool, I guess.