BingeFics
Did you watch Young Justice Season 4 last episode ? It was awesome. Well Luke can appear at that time and help them stop Zod with destroying Eye of Eskron and capture Ursa in his dimension. At the end, attending Connor's and M'gaan's marriage he will returns to his universe with Ursa in his pocket dimension. I think you should do 2 chapters around this episode. Also I think author should also add some chapters on Injustice 2 with Luke helping Insurgency to free Batman from Brainiac Superman's mind control.