As I keep saying here in the boards: As an Urgot main and huge fan of the Star Guardian skin line, no, don't let this happen.
Urgot can become some kind of villain for that universe, like an eldritch space horror that is ancient and behind the corruption that has Zoe, Xayah, and Rakan in it's grasp.
But Urgot should never become an actual Star Guardian. It would ruin both, the skin line and Urgot, since this would just be a joke that completely ridicules one of the most popular skin lines in the game.
And Riot agrees that this is most definitely just a joke among players because Urgot would be the last champion who would possibly fit in that skin line. But the actual number of people who would go out of their way to buy this skin and even use it in the game will most likely be really small. People just want a laugh, nothing more.
So I hope Riot keeps staying adamant here and does not create a Star Guardian Urgot.