Strikers, in the Japanese version, did make references to Royal sorta. In the final dungeon, Morgana says that the place reminds him of "A Palace half a year ago that also corroded reality". Which seems to be a nod to Maruki's Palace in the third semester arc, especially given both that and the final dungeon in Strikers have an Garden of Eden theme to them. Granted it's very much implied so and the english dub cut it out so it's moot point.

But yeah I understand and respect that decision. It also seems like I misunderstood the "two week limit" bit, my bad. I thought it meant the update itself couldn't happen in-game for two weeks after release, not literally don't post here until two weeks after release.