Heres what i was planing on in putting in my server, but i had too much trouble with it. Now im going to release it you guys and see what you make it. Just for builders, here's a challenge for you.

READ:Tree is NOT included

-- Requirements:

Buildings either match each other, or mach the tower/spawn/Nether entrance
No Fancy Iron,Etc blocks, basic build efforts, but you can use few(wood,stone,etc)
Can NOT terraform land, UNLESS you create a farm
Build walkways to each of the Islands, 4-5 blocks in width
Make it a village, nice roads and houses, and other buildings too

Additional Requirements:

Build a mining op. on the lower parts or ONE of the islands
Build houses along the lower parts of the island
Create an organized farming area for a group use
Create 2-3 giant trees, or 1 tree house
Redstone mechanisms will be smiled upon --

The best design will gain creative rights on my server(You must be signed up).
Possibly some more things too, but nothing else at the moment.

Additional Notes

If you to use this on your server, maps, etc, PLEASE CREDIT ME! I would appreaite it if you were to credit my work if you are to use it. You may freely use it......copyright is copyright.