Honestly, with some of the main-stream mobile games getting collaborations with Wicked... wouldn't it be funny if the same happened with HSR? A whole new world or Penacony event dedicated to Wicked, the trailblazers fight against the Great Wizard of Oz who was corrupted/made a deal with a stellaron for power. Enemies could be the flying monkeys, corrupted munchkins, Nessarose and Madame Morrible, 5 star characters could be Elphaba and Galinda, we'll basically be Dorothy and team up with the four star characters the tin man, scarecrow, and cowardly lion in the beginning before we learn the truth about Elphaba and join her side in the battle. The trailblazers are pulled to the Wicked planet via a wormhole "tornado" type thing and we end up hitting Nessarose with the train or something instead of a house. Mr. Reca is somehow involved as a four or five star character, records what we do, and bam Wicked becomes a dream bubble thing. Something similar to what we got with the Fate collab but a musical rather than a silent movie lol
Hire me Hoyo, I've got ideas for days.