[X] Pansy speaking to Lockhart about...various matters
[X] A Meeting of the Council of the Host
These two things I believe are the best options to keep the subplots moving. IE Seeing what Lockhart is doing in preparation for next year's focus as well as a report on the political situation at Durmstrange as Hogwarts stirs trouble by trying to break the deal that they agreed to about the memory wipes.
Honestly I would like to see George and Pansy fight, CtF with Ron or the Pansy interacting with Allerita but they seem like at the end of the day not important overall. Fun moments but side events to the bigger issues that are boiling under the surface.