Concerned about Mydei's kit
Before any of yall come with that "It's V1 bro just wait", hear me out. V3 won't change the core aspects of what makes his kit underwhelming. For all we know, he could get the Fugue treatment and get nerfed overall.
With that out of the way, my issue with Mydei is his automatic skill use and his element. First, there's no reason for his skill to be used automatically specially because we've been fighting stages with 5 enemies way more often. Stacking it is already kind of weird because his E1 really should be base kit, but the main issue is you're relying on the games AI to decide on who should you use your strongest attacks, which sucks.
Another thing is with his Imaginary element, you're often going to be breaking enemies with Mydei, resulting in an imprisonment, delaying enemies actions more than the other elements. It works for characters like Loucha and Welt, and even Aventurine because he's a sustain, but not on Mydei. His defense is specifically set to be lowered just so he takes more damage from enemies to charge his Vendetta more efficiently, so why would you want to break the enemies and deny them from dealing damage to Mydei?
Some aspects of his kit are counter intuitive and restrictive and should be talked about NOW rather than ignoring them and hoping for the best. I know he's not supposed to be popular as a male character in a waifu-centered game, but addressing these issues would be great. Like reducing his toughness damage to 0 during the Vendetta state and giving it a buff to compensate for the lack of Weakness Break and removing the automatic use of his enhanced skills, maybe making them extra actions or even follow-up attacks, I don't know the best way to do it.
Tldr: His element is a detriment to his playstyle and automatic uses of his ES1 and ES2 should've never been a thing.