Now that's a bit offtopic but: not really.
An idea I would have loved to turn into reality is a kind of "instanced collaboration" mmo. Which means you have a big map with lots of tiles. every tile is a warband map. Everyone can open those tiles in the warband map editor, edit the map and contribute the changes to a global database. Like a wiki for a big world.
You could then run around a tile, and at the tile end, you switch to another server that has a different tile loaded.
Would all be possible except the "switch server part" - I've been lobbying to TW for years to get that feature (denied because of security issues) and then cmp (denied because of WAY too much work), so this will probably never happen.
What could happen eventually though is extending strategus villages to towns/castles via stronghold menu, or maybe even building new ones. Also, terraforming is possible with the new WSE.
Anyway, too offtopic.