Hm, any kind of Crypton copy stuff, Miku formula cough couhh,,
Like triangle belts, pleated skirts and school shirts, black/gray and some other color color scheme, armwarmers(sooo much like there are all kinds of sleeves that don't look like carbon Crypton copies)
Kei style art I don't find particularly pleasing in the first place, so seeing poorly done style rip-offs wasn't fun. Another peeve is when people had their Utau be,,, hm, idk how to describe it. First I didn't like the trend of people's Utau being like Vocaloids, like, Utau is its own thing, but a lot of people put their Utau up as like second-rate Vocaloids >=< so hard to describe what I mean ughhh
Another thing I didn't like was the trend of people's Utau being especially eccentric for whatever reason, like, to an unnecessary degree. (Like with the Vippers, all of them have something considered odd about them, IE. Chimera, hermaphrodite, six year old cross dresser with missile breasts, just, that kinda stuff)
It's like... Outside the trend of trying to be like Vocaloids and in their status, there was a trend of trying to be like Vippers...? Since they were like Utau pioneers to most at the time or something..
Trends I like,, well, I wasn't around in the Utau community in its start-up days, and even now I'm rookie as hell with like everything xD but I'd say,,, does Utau that are trending count? XDD like, it's so great to see Utau other than played-out Vippers take the stage for once, you know? A trend I also like is Utau users/creators going out of the old, overused trends(I have no clue what's going on with my statements rip)