Hi,
I had an idea but have no clue on how to intergrate it. but maybe some people that already made tools know how todo this.
Ok, here we go.. when you place an enemy in a room and load the level, you can shoot it (dus) and blood appears on the wall. When you empty your uzzi on the dude from differend directions you get a way more realistic bloodfilled room than with putting decals in by hand in the editor.
Now, if we could only capture that sort of things, and make it pasteble in the mapeditor, that would give is some very realistic effects. And ou wouldnt have to put all the decals.
Kewl!