Star Guardian theme expansion ideas

Considering the (obvious without saying but whatever) anime/magical girl/etc.. theme that these skins are based around, I think it could be a decent idea to explore an expansion of these in the form of not just more Star Guardian, but an opposing/rival type theme to those (that often exist within the animeverse of similar themes), for the sake of names we could call them the Star Nemesis line.

Maybe theming certain champs in those roles that are counters to the Star Guardian champs, and then if you wanted to go further you could go for the whole 'trinity' idea and have another themed set which counters those but is countered by the Guardians (for the sake of pulling a name out of a hat, Star Scourge).

Example Star Guardian Jinx Star Nemesis Quinn/Ezreal/etc.. Star Scourge Caitlyn/Graves/etc..

Star Guardian Lux Star Nemesis Fizz/Zed/Talon Star Scourge Kayle/Annie/etc..

You get my drift, you could even eliminate the Star from Nemesis/Adversary and name it whatever else obviously, i'm talking more about theme here than specific names and titles. ie. Dark Nemesis, Galaxy Scourge, whatever. (yes cheesy, but this theme isn't exactly down to earth and non-cheesy as a baseline)

You could easily theme them visually after the numerous material that exist, from the whole magical girl thing or otherwise, and it gives them more of a varied palette of style than just the white, pinks, and fluro colours you might otherwise be limited to if they were all as mahou shoujo themed as they are currently.

Just an idea, discuss, i'd like to hear others ideas on this type of expansion of the skins, if you agree, disagree, and why if you so wish to share.