Dark Star Aurelion Sol
Aurelion Sol has not gotten a skin in a while I believe, and with the release of the new Star Guardians coming out, I thought of the Dark Stars since they are considered the Star Guardian "rivals/enemies" (please correct me if I'm wrong). So then I thought about Aurelion Sol since he is star-related, and I thought of Dark Star Aurelion Sol.
His Q becomes a black hole. The stars that orbit him become either black stars or purple stars or just something along that line. His E trails behind him dark particles. His R is like a space vacuum or something like that. These skill concepts aren't really developed, the main one I focused up on thinking of was just the black hole idea, so if you have any more skill concepts that you would like me to add to the main post just let me know and I will.
In any case, I think both Riot and Aurelion Sol players will benefit off of this skin if it is made right. The Dark Star concept it rather popular from what I have seen, and a "Dark Star" Aurelion Sol honestly wouldn't be too far off from his lore. The Dark Stars are "corruptants", and it would make sense for Aurelion Sol to become corrupt since he is literally being forced against his will to use his power. Assuming that Dark Stars are the enemies of Star Guardians, it would also make sense for him to hate the Star Guardians since they are essentially drawing power from the stars (again please correct me if I'm wrong).
If a Rioter or anyone who works in the skin department somehow reads this, please make this skin a reality. Even though I'm not an Aurelion Sol player, I believe a darker colored theme for Aurelion Sol would make his already gorgeous design even better.