I don't know much about the other classes other than Warden and Sorc, but, regarding some of the warden skills:
1. Warden Arctic Blast/Polar Wind animation is annoying because it basically takes the whole screen with an ugly wind. The wind is not even pretty because it has sharp/pointed edges so it's not as "circular", looks like a triangle breeze (ok i'm obviously exaggerating, but that animation is obtrusive and looks kinda outdated and unpolished).
2. Budding Seeds. It's just a regular flower that I've literally seen the same flower on places like Glenumbra, so the flower is a reused model commonly seen in the game, making the skill less special, like zooming the model of the flower is just meh...
3. The Netch skill is one of the worst in the game, it's clunky, slow and has an annoying animation. Mages guild entropy all the way, hate to recast that thing (the Netch skill is good tho).
4. Last but not least, am I the only one annoyed with how Animal Companion abilities are Morrowind fauna based...like...i don't even know what morrowind looks like and here I am casting all of the morrowind fauna to fight alongside me. I get that the class was made to sell Morrowind, but shouldn't we move on already? And the lack of cosmetics and skins for the Bear, so much time and we only have 1 bear skin that is the grey one, it shouldn't be hard to implement something like a jaguar/leopard/wolf/or whatever skin or some cool accessories for the bear...