Are you honestly comparing a single work of art to an entire attraction? You do realize how absurd that sounds, right?
While the dolls are Blair creations, the entire attraction is not. Moreover, Blair was an employee/independent contractor of TWDC employed to create these dolls to be placed within an attraction. The dolls that Blair created don't stand alone as anything significant. The entire attraction does. Moreover, given the very nature of attractions (fluid) versus single paintings (non-fluid), the analogy is faulty.
The dolls fit and work well and breathe some new life into the attraction. Not that it was stale before, but they ensure it won't be anytime soon.