I think Galarian Rapidash is a good Example. The devs got many things right about the design, mainly the main body and the colour scheme. However, they ruined it for me with the details of the head. Its nose and jaw aren´t sharp like the original Rapidash, but more rounded and almost swollen-looking instead, and the shape of its eyelid gives it an annoyed or condescending expression. It just doesn´t look majestic at all. When your unicorn pokemon looks more like a My Little Pony OC reject than a majestic, dreamy horse, you've done something wrong. If they just put original-Rapidash' head on the new galarian form, it would look much better already. I'm also a bit sad that it doesn't have the more poofy hair like ponyta.
Tbh, the unicorns of the legends are quite the jerks, as they stab anyone who is not pure of heart. So, having a Rapidash with a more condescending expression makes some sense, especially if they feel entitled to judge a human with a single scan of their horn. And, to be honest, rather than MLP, that kind of attitude reminds me another unicorn from another series: Celestabellebethabelle from Gravity Falls.
