Stop me if you've heard this one....
With the 30's - 40's Hollywood theme, how's about licensing rights to period movie stars, especially period comedy, for both impersonation and film clips?
They aren't Disney characters, but DCA is.... even with the changes.... not Disneyland. Fits better with the theme than a lot of things they are doing now.
Impersonators doing meet and greets on the street, film clips - probably best in montage format, with soundtrack, for modern audiences attention spans and lack of knowledge of the characters - in a small theater or room of a theater.
W.C. Fields, Laurel and Hardy, Marx Brothers, Keystone Cops, Chaplin, even the Three Stooges (hey, they're popular and translate into any language).
Cary Grant, Katherine Hepburn (playing a kind of real life Cruella de Vil), Judy Garland, Mickey Rooney (in "hey let's do a show!" mode), Bogart, Gable, Jimmy Stewart. Gary Cooper in High Noon garb. Errol Flynn in green tights. Astaire doing a little steppin'. Claudette Colbert as Cleopatra (maybe a stretch there).
Of course the problem is licensing rights. Some/many of the biggest stars may not be available, at least for impersonation, or at a rational cost. Some star's estates, seeing Disney, may see excess dollar signs. Some - Garbo, Dietrich - are likely not available at all, at least for impersonation.
So they do a list of 50 - 100 and get who they can. So many possibilities, they'd get enough to make it work. Even lesser stars would be an attraction - Roy Rodgers and his dog Spot! (or was that Cal Worthington...). Burt Lahr as the Cowardly Lion (might need to deal with L. Frank Baum's estate there).
Of course modern audiences don't know some of these, but picking those that are very visual/identifiable - combined with the film clips (edited for a modern sense of pace), maybe followed by 1 minute biographies of each star..... what do you think?