Discussion of mapmaking works!

I don't quite understand the idea, what's the point? Creating another campaign, but a shared one? What's the goal? The idea is interesting, but I'd like some clarification.

Well... it's like there will be a campaign from HeroesWorld... that's cool... we can post it somewhere on other portals, like AG.ru or something else... :)
But we need to figure out how to do it... maybe like this... one person writes the scenario... and of course, we can take something from books or whatever... the second person makes the first map, the third person makes the second map, etc... and that way we can create a very large campaign for "L" maps... :)