First of all, this topic would better fit the "Custom maps - Map discussion" topic that so many of us have requested in the past, and been denied. Sticking it here, rather than MP maps, since this is actually a discussion thread, and more frequently viewed.
So anyways, on topic- I'd like to make a topic to discuss ideas for custom maps. Generally, referring to ideas for multiplayer maps, whether competitive (Think arena maps.), custom (Think infection, slo-mo, etc.), or mini-games (Think saws, races, survival, etc.), or anything else. Of course, SP maps aren't excluded.
Obviously, ideas will come in a wide variety. Anything unique is acceptable- Whether it's an idea for a map layout, a unique concept for a gameplay mechanic, a dynamic element to be implemented, or an entirely new game-mode, its all good.
The point of this discussion is for the community to put out any great ideas they have- Particularly, people who are not versed with the level editor, but have great maps ideas.
Because, to be honest, I'm running short on ideas. Requests are welcome. xP
Please, be creative, be original, and be open to constructive criticism, and technical viewpoints from the map makers. (I'll try to get a few involved here, if this gets a great response from the community.)