What about to melt deathrun and puzzle in one map ?
We all start with gravity guns, combines and rebels, we have some traps, we play dr normally, but at some times where respawn is enabled, we have to build (Combines AND rebels at the same time) the quicker we can a bridge or something like that to pass through a "puzzle" part of the map.
The quicker team get the advantage on the other, as it can run to the end/Prepare traps.
I've just tought of that.It would be really fun I think ! I wanted to include it in my map dr_hl_2 but I am noob with SDK, I have problems with these valve games atm and I don't have much time for me.
So it was just to give an idea to our fellow, almight and flawless mappers

But hey dawg I want 2 be in the credits :3