Welcome and thanks for posting.
IMO only, most of the time when Disney uses some version of the "carnival" theme, AKA, Previous Toy Story lands, Bugs Land, Mickey's Towntown Fair, Paradise Pier 1.0, its just a design by sign theme of a normal off the shelf Carnival rides, which just comes across to many as a cheapen Disney Experience.
That said, I do think they got it right for MK's Storybook Circus. I actually think that turned up much better then the rest of Fantasyland Forest. Storybook Circus is rich in details, feels like the classic and romanticized circus you see in Dumbo, truly a version of circus (borrrowing from DHS dedication here) that never was and always will be.
I have yet to feel how fleshed out Toy Story Land will be. All the other Toy Story Lands around the world have featured Carnival Rides and come across as the All-Star Resorts of the theme park lands. Bright, colorful, oversized, and fun, but not overly welled themed. They are are "Value" additions to the park. And truely in almost all cases, their themes were chosen because theming carnival rides to look like a fair and fair rides to look like a carnival.... well thats as you might imagine comes quick and cheap. And the lands come across as such compared to say, Frontierland, Fantasyland, Adventureland, Future World, Sunset Blvd, Africa or Asia.
I think DHS toy story land suffers the same but to a LESSER extent. At least by looking at the model and artist rendering, it looks more fleshed out to me. It feels less carnival like. Having a real coaster helps. Having a better themed Coaster would have been even more helpful, but overall I do think it is going to be the best version of Toy Storyland Disney has done yet.