I only really played with other map makers so we had a great time and didn't get too caught up in the imperfections of the single-player or multi-player details. We did not compete fighting on the map but instead with our maps. Finding compelling and creative ways to use objects, brushes and environments to paint the perfect map was the only challenge.
Our biggest challenge was creating a map that was both aesthetically gripping and game play perfect. Often particular map makers would lean one way or the other, strong on one half and marginalizing the other. This caused an overabundance of un-balanced and bland maps. Kinda killed a lot of the community but also motivated a lot more to design their own maps. A lot easier said than done.
If Crysis 2 gives us the ability to create our own map on the console like Far Cry or on the PC like Crysis, I highly encourage anyone reading this to spend the time needed to learn how to create your own map. The moment you see 16 people running and gunning on your map and having a great time, the reward with be worth 10 times the effort.