I have to say Chaos is a lot of fun. I recall playing this map somewhere when TF2 first came out. I joined in when I saw the post to help fill and server and if its low I will do it again today as much as possible.
This map is great for spies because since it is so small things get crazy people don't pay attention to their surroundings.This map works because it sticks to the map formula seen in may fps games like UT,Halo,etc. It is a mirror map.So if you lost in the enemies base once you know your base surrounding its the same as the enemies. Sentry placement is real easy to figure out but it seems to be as just go attack or defend kind of map. Which is good because you may be attacking all the time and getting closer to the intel but then wham! the tables turn and you have to go back to defend intel so you offense weakens.
I look forward to seeing all of you on Chaos.