Multi-Staged CP map

Hey Everyone.

I'm trying to come up with a good layout for a multi-staged cp mat like dustbowl with a junkyard/landfill theme, but I am having a HUGE block when it comes down to making a good layout. Whatever I draw, it ends up being too similar to the dustbowl layout, since it's the only map to reference from. Does anyone have some good pointers or rules of thumb to go by when trying to design this type of map?

Yea, Thanks. I always try and draw stuff out ahead of time, but I just can't seem to get the creative juices flowing this time.

I found some great concept art on deviantArt to get me started, and have done a lot of conceptual sketches based on these, but they are all just random buildings or area's so I need to find a cohesive layout to tie it all together.

Here's the stuff I found on DeviantArt:







It's got a great style of architecture which fits perfectly with TF2. The 2nd pic would make for a great capture point, also.

So far, this is what I have about this game mode:

2 flags per stage, with the first being easier to capture than the second.
each stage is progressively harder to capture points
attacker-only side paths are used
etc., etc.

Anything else that is really important?