I mean, you're agreeing with me then. It's about them destroying th3 walls between worlds and making a super Eggmanland. Not about making some transcendent super-space.
It’s not. The plan was to let both universes be destroyed entirely, not fusing them together to make the new Eggmanland.
The artificial space is just a non-universal 4D space. 5D would require it being universal in size along with having a higher time dimension. I'm not seeing 5D for any of the dream worlds personally.
Well the maze space itself does contain trappings of a stellar cosmology as well. But the dream part is due to the fact that whenever a wish occurs, that wish is considered a dream, and the dream is created by the Precioustone as a tangible world to match whatever the dreamer was dreaming about. So, if someone had a dream about a 5-D world, then the dream would match that scope. It’s important because these super-dimensional or transcendent spaces Eggman created (the Ruby dimension in particular being stated as
infinite scope) are either explicitly or implicitly confirmed to be dreams of his, which means they would show up in Maginaryworld.
Then, because Eggman also physically traveled inside of Cyberspace, his memories and dreams were taken from his head and added onto Cyberspace, just like Sonic’s dreams and memories, and the Ancients’ dreams and memories, were. And Cyberspace can make these dreams and memories as tangible constructs in this dimension, because Cyberspace is powered by the Chaos Emeralds, which turn thoughts into power and reality.
So Cyberspace can likely contain the 4-D space areas that Eggman constructed in his dreams and reality, as Eggman confirmed that Cyberspace was beyond any digital construct he had ever made in scope and complexity, and Cyberspace itself has an overarching time flow, and CS itself has statements of containing an endless, unquantifiable, defying quantificafion amount of 3-D data, along with absorbing data from across the universe into it itself for 10,000 years, which should qualify as universal size.
So, CS is also 5-D.