Going over part 3 of
@tommyhawkins Epic Universe blog.
I think he brings up important points about the 21 acre plot potentially being used for more than one IP.
I feel like most of those who are strongly against Wicked coming to Epic may have been thinking about it in the context of consuming the entire 21 acres, leaving nothing for LOTR / future expansion. But this demonstrates how we could potentially get both. 21 acres is probably too much for Wicked, but probably too much for any single IP (in one park at least).
I would say as well, that if Wicked were to take the West/left side and LOTR takes East/right side, that would still leave room for a future transport attraction between Epic and a future sister park, if they were to go the Hogsmeade/Diagon route.