So... some vague ideas that you can maybe nudge into more concrete ideas?

• That thing I skyped you about is STILL ON THE TABLE in whatever iteration ends up being reasonable.
  
• I feel like the Jameshills have enough played presence and a colorful enough history that they'd make decent candidates for one of the "two households." If you find another bougie-MC family to play the others, I can sacrificially offer Lou for an inciting event to get the animosity started. Could be something that happened in the past, in the future, something that never happened but Family B thinks happened, whatever. I'm flex and always down for drama.
  
• If Art is doing anything in the nearish future to make Dezzie doubt his fidelity (what did I hear in passing about a bender?) and Thom caught wind of it he would 1,000% encourage that notion and/or pave the path for her to leave him just because he dislikes Art that much sort of like the unreasonable obsession Iago has with ruining Othello's shit. If she was inclined to strike out on her own at some point but not financially able to do that he'd offer her some sort of management/exec level job at his company that seems glamorous enough to maybe make up for the lack of actual Quidditch playing in her future.
  
• Connollys seem like a good choice for the Taming of the Shrew one but I don't and let's be honest probably never will understand their family tree well enough to make any actual suggestions. HOWEVER: I'll offer to have Ben knock up the younger sister to add a very distinct time crunch to this if you have a set of suitable sister somewhere in the tree and to give me shit to do with Ben.
  
• Re:Amortentia Troubles, I could offer you J. Alfred Darrow Lupus Jameshill or Lyra Potter all of whom are their own different shades of inappropriate.
  
• If Alfred decides he's going to be a Real Adult maybe re: things with Zelda Hamish could totally be his 'yo but drinks' relative, but that's less of a plot and more of just a thing that will probably happen anyway unless you have ideas about how to make it a plot in which case HMU.

And as always if you have any specific needs my folks could fill, let me know. I'm down for anything, generally speaking, those were just my vague ideas based on your list.