Crobat
Hitmonchan
Kabutops
Can't think of any others at the moment.
I think for Crobat the issue is just the strange crossover with light pink and dark green. If it had a more suitable inside wind color, it'd be a lot better.
Hitmonchan would've been nice if they didn't change it's main color to that strange yellow green. Just new gloves would be interesting, but an actual decent color overall would have been better.
Kabutops isn't entirely terrible, but it suffers from what a lot of Pokemon Shinys have in common. Weird Green or Weird Pink.
The Dusknoir shiny. Completely ruins the awesome shiny versions of Duskull and Dusclops.
I can't say that shiny is terrible, but I do dislike it when there is one shiny I like from a Pokemon theme, and it changes on a certain form.
Tauros
Krookodile (Man he looks evil as a Shiny)
Hydregion
Tauros weird green syndrome
Krookodile looks like crackers and cheese
More weird green syndrome + orange.
Garchomp (I can't even tell)
Samurott (looks the exact same except with gross puce-coloured shells)
Woobat (it looks like a winged snot ball)
Garchomp suffers from the slightly tinted color syndrome.
Samurott's Shiny reminds me of some kind of Gameboy game played on Gameboy color where you alter the color scheme since it doesn't have a color in the first place. It looks like one of the color schemes on it. But yeah, bad.
Weird green syndrome for Woobat.
I've only ever had 2 shiny pokemon, and this is one of them.
The original colour looks much better.
I think it's just the specific type of pink they chose that is wrong here. Too gaudy.
Woah, man.
Pimpkrow is probably my favourite Shiny.
I think it's a little too bright for a crow personally. If it was darker, or a different shade I would like it more.
That is pretty rad.
My pride and joy, of course they were probably clones.
Those are really nice, but my issue with the Steelix one is that it isn't gold enough. Still great, but a missed opportunity in my book.
The more I look at this
List of Shiny Pokemon, the more I notice how much weird green and weird pink shinies there are.
Another thing I really dislike with Pokemon shinies is that a lot of em also have a slight tint from the original color, so it's hard to notice it's even shiny at all.
I guess for me to make a list, it'd just be a huge list of slightly tinted, weird greed and weird pink. So I guess I won't make a list.
I'm beginning to think Gamefreak got
really lazy with the Shiny Pokemon, but least there are some gems.
Huge List Of The Greatest Shiny Pokemon (not in any order)