You had plenty of maps where the creators tried to match the game's feel, and so many that were completely unrelated. Giant bathrooms where you are the size of a mouse was one of the standouts I remember.
This level of customization is often just something businesses have moved away from allowing. And considering the "condo" problem with Roblox, it's understandable why: https://www.fastcompany.com/90539906/sex-lies-and-video-game... (The bathroom map I recall above, had a photo of a topless woman in a hidden area.)