So we are getting a rerun of the last Rance Collab in the Beat Gacha for September [Lia/Shelia/Silky], most likely we are getting another collab in October which would be the first in 2 years. 5D should be next, although we already have Rizna as far as the main heroine for that game, it could also be tangentially related to KR. I think Hornet or Warg have a decent chance of appearing along Feliss for gacha with maybe Copa as a free unit. There is also the chance for someone like Magic Sill or Hawzel.