From what Rob Bowling said the only way to customize is to make a Private server and change what they allow you to change/configure. Not much in the way of a Modded Clan server. Plus this will be reliant pretty much solely on your connection/upload speed.

This blows any way you look at it ...unless you are a console gamer. This might as well be called Airbourne 2. Who knows ..maybe single player will be really good but I for one play PC games to play online otherwise I would just buy a console.

Just my 2 cents..