So, I have been taking a break from forge for a little while from a death of a map, but I have an idea that might put me back into it. I am thinking of making a map on sandbox, either in the skybox or the dunes, where you drop down into a gorge instead of moving around a corner of walls at each other. These are a few pictures on paint to show what it might look like (if you don't mind my crappy artistic skills): Side View Top View You could just drop straight down from a ledge, but the weapons will be on the sides, so that you are less likely to do it. The rocks will keep people trying to get to the middle, but it'll still probably be a very open map if it's made.
Go for it. At this stage I see nothing wrong with what you have planned and the map could be quite good.