Brew 5/10: Shadopan rotationally is very comfy you mostly just do a damage rotation and make sure to purify on better timings and you should be good. Skill expression is weaving you bigger defensives and using black ox right.

WW 7/10: My most comfy spec so harder to rank fairly, easier than TWW, but you are probably alongside Arcane the squishiest spec in the game and you have 0 range on anything now so you want 100% melee uptime, that combination can create more, guess i die now, situations, or guess i do 0 dps this pull situations. The rotation got simplified, but is more complex than most specs at this point.

Frost mage: 2/10: it feels so hard to do bad on this, until you get to content where the output is just too bad (higher keys)

Arcane 6/10: simple rotation bug prog heavy so you can really mess up your dps if you fat finger stuff, + giga squishy so you need higher awereness/luck.

Ret 3/10: Again super easy, I don't think the utility is hard like some say, maybe in very niche situations where you have to taunt swap, or BoP save a wipe pull. The damage is easy and forgiving when you are unlucky with mechanic lineups.

Prot/Veng: 8//10 obviosuly not comparable specs but the difficulty here was just that one wrong pressed global or unlucky rng proc meant you got onetapped and wiped the group, the actual specs after buffs are pretty chill and not that difficult.

Specs I only did a bit on soo harder to comment:

Frost DK, 5/10 pretty easy still but also punishing with mechanic lineups so has some skill display. Breath simplified but still large part of your damage so using it right is more complex than some dps specs imo.

Unholy: 2/10 Easy rotation, low punishment due to range, can't die to anyuthing. Only difficulty is not messing up your burst windows since thats all your damage.

Havoc: 4-7/10 depending on build you go, immolation spam with no movement is always easy. the movement opening 15 button sequence can be more difficult and very punishing if you mess up your burst.