I always going back and forth between Eternal Sailor Moon. On one hand, it's so jarring (and kinda ugly) when you look at it next to her other forms (even Sailor Cosmos makes more sense in context next to Super Sailor Moon and Neo Queen Serenity) and the other hand I kind of like how dramatic it is and how it kinda interrupts Sailor Moon's design ethos? There's something balls-y about it.
I think it's really the fact that everyone else looks so generic and removes everyone's individual design quirks. Like I'd rather keep everyone else in their Super form since Eternal was supposed to be this extra special form for Sailor Moon... Meanwhile the other girls still keep the SAME transformation phrases and attacks and end up getting curb-stomped in Stars, it's such a useless upgrade I don't even get why people were mad that the Sailor Stars anime didn't keep them?