Looking for suggestions! Big harem set. (Patreon)

Achieved some impressive (imo) breakthroughs. Wanted to push the envelope and now would like some suggestions for some nice harem/multiple girls at once - set.
Doesn't have to be cross-overs but you're free to. The picture is just a fun frame of reference. Also might need some suggestions later on who to pick for the male character (if any).