If I do decide to bring it back, it will likely have some changes compared to the Alpha 6 2 Floor demo version. Also, earlier today I decided to add a "high object count" warning when trying to load a custom floor with 1000+ objects, like what Geometry Dash has.
And I've been working on implementing customizable map tiles as well, where you can choose what background and color you want each one to be, which looks nice because they also having scrolling backgrounds, similar to the map tiles from BB+ V0.4.