First, we need more characters with Star Guardian skins. Xayah, Rakan, Taliyah, Kayn, Akali, Irelia, Ekko, Zoe anddd... URGOT.
So how do we make Urgot fit the theme? Simple. Bring him out for April Fools. What could possibly be more amazing? You just release the Star Guardian mode and make Star Guardian Urgot the final boss. It makes perfect sense. The diabolical enemies created SG Urgot to destroy the star guardians once and for all.