Sorry Schmidt, I'm going to hijack your idea here, but older LCC members might remember the "Purge of the Magic Isle" and it basically sounds exactly what you have described Schmidt
It entailed the three mainland factions laying siege to the Magic Isle, unsuccessfully I add
Maybe we could do something like that? A big central castle, I think an obsidian themed one would look pretty impressive, under siege from the three mainland factions while Outlaws and magic users defend it? Although I'm not a big fan of battle MOCs I think it would definitely be a crowd pleaser.
We could still do a map as a display too. maybe 4 64 X 64 baseplates with simple 1x1s showing a pixelated version of our map. Then it could be propped up like the portraits usually are, with info. cards next to it.
And for people who don't have a ton of bricks or time to donate to the bigger collab( And also for the people who have MORE bricks and time to donate to the project too
), a series of LCC flavored vigs like the Civil War guys did last year.
It combines a little of what everyone wants! Yay!