Need a good idea for a map!

[Slaydon]

Could any1 suggest a good map i could make, i would make an Rpg, hate to build TD's lol. I would try to make it the Largest Area
This is what i need,

What its based on.
What you need to win.
Boss(es)
Theme.
Safe Spots (Villages)

Thank you!

 

[Shanghai]

this should be in the idea section and what kind of stuff do u like u must have some fantasy by self :S im currently making a lotr online rpg and 2 aos maps