I was thinking... (it hurt just a little little)...
Would everyone be okay with the following two extra's to the plot:
- Dementors will return. We don't know who is leading them. Possibly a new villain. Great chance to practise our Patronus skill.
- The Triwizard Tournament is returning.

Together with those, we will of course also focus on: Quidditch, classes/spells, character depth and relation to other characters, etc