So here is my ideal expansion. I used the same show building as FJ for the new ride as an assumption of size. I also used the same buildings cut up in various ways to keep scale. Here it is without any notes:
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Here it is with notes:
The entrance to Hogsmeade stays in the same place, with the to/from of the Hogwarts Express the same way (I kept this because I don't think Universal would shut it down for an extended period of time).
6 - Old DD/DC entrance would be the entrance to the expansion
1 - the entrance from Hogsmeade to the Forbidden Forrest walk through and the new ride's entrance.
3 - Forbidden Forrest walk through area, with the wall that used to hide DC from people exiting Hogwarts Express demolished so you can see the Forbidden Forrest and the Shreaking Shack in the back, which is the ride Facade
2 - New Ride with SS facade, and queue through interior of SS as well as FF (similar to E.T.)
4 - Sit down restaurant similar to Mythos
5 - relocated smaller stage, with large area in front for viewing and no paths to block
7 - expanded castle show viewing area
8 - raised platform / possible eating location for up charge viewing of castle shows
I don't think I forgot anything... rushing to get this up so I can leave work.
View attachment 5424