I can't stand Pokemon who don't have an implied surface texture in their design and instead just have seemingly colored plastic. It either needs to be drawn on directly, have an implied direct real world counterpart, or be implied through other details.
For example:
>>54686674Flat colored "skin" but you can tell they're hard interlocking shells/plates which works
>>54687560Looks too much like colored plastic or rubber
>>54688259On the surface you'd say it's like Ampharos but it's close enough to the real world counterpart that you have an idea what it's supposed to be
>>54689446Also close to being colored rubber but the spots tell you it's supposed to be amphibian skin so it works
>>54690361Materials too ambiguous, the black underbelly could be satin for all we know
>>54692631Literally Ampharos but we've seen it's fur ruffled enough times to know it's there
