As someone who considers himself a pretty big Starlight fan, I dunno that I want to see this happen. Because, I'll be the first to admit, she very much plays the role of a Sunset Shimmer equivalent on the main show, so it would be kinda out of place, I think. I would be okay if they had her as one of the many background characters, though, perhaps interacting with Trixie, since they're such good friends in FiM.