I am close to an update and expect it to be online this week.
It will include the ability for players to obtain a sysop key and edit the 'demo' server map. I have a crude "Celeste" NPC programmed to explain how to obtain the key and edit the tiles. I hope to include a complete display of existing tiles.
Players will be able to edit, and other players can re-edit, and I have no idea what type of map we will end up with, so I have no idea what the future holds for it - it may just get deleted an we all start over.
I can say I fully expect a future where players have their own server where they can edit maps and other players can play on, and a network of teleports to connect these player-servers together.
This update should give everyone an idea as to how big and exciting this project can become.