I think there is a ton of stuff "hidden" stuff at Hollywood Studios that most guests might not get - but things like Gertie and a bunch of the store windows, etc, there are a ton of details taht tie back to old Hollywood/history of movies that I would hate if the lost
For example, one of the window says 'Valiant Detective Agency' from 'Who Framed Roger Rabbit' (it's above Hollywood and Vine Restaurant on Echo Lake).
And to build on what
@rteetz said, Gertie is actually credited as being the worlds first animated movie (so obviously important given the role animation played on everything Disney being started) and the tag line for the movie was “Gertie – She’s a scream” - which is why it is an ice scream stand
And smaller things, like Min and Bill's (which, I guess their names are being removed) but the Min and Bill's movies from the 30s were a big money maker for MGM and there are smaller details around that - such as a create that reads "Rosebud Sled Company" - things like that