I think you're underselling what the lagoon show can do - but noted.
As far as Bourne, it really isn't that simple...
![LOL :lol: :lol:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
And using B&T from the early years isn't a shining example considering what the resort was dealing with financially.
With AA - it was still creating a bottleneck when they had shows there in the past. I can't even imagine walking through CP after a show dump now.
Heck, they can go as easy as just showcasing the concept and design of the original characters they plan on including this year.