Hi Olahm,
sorry, Itch hasn't sent me a mail notification.
Yup, the Meta Maze is optional. All you need to do is to transfer the player to a "Space Map" and use a Plugin Command to generate a map.
Looking at your draft, you really should check out how I did the sewers. Because, by default, the exits are put on the map's end, but the sewers Template puts them anywhere. You can copy-paste the sewers Template from my Sample right into your Game and give it any name you wish ;)