OUCH! ROCKS!!!! If it weren't for the ROCKS!!! I'd give a 10!
But I'd have to say that the seperation between noobs and advanced really makes the experience a lot easier. For one...noobs won't get turned off by getting mugged by a 15 year old kid with an intimidator/angel! And they will be going up against people @ their level of play. Also...vets won't get mad at noobs who don't know any better because well...they're new! And for the most part all the people who play in advanced/vets play with respect for each other (for the most part...hey if you're nicname is the naked ninja...I'll cheat just to mug you! hehe)
The coil field is a great set-up however...the concept field needs a little more air in their obstacles. And for those with CA/HP systems....they have an air compressor so you need not worry about the field running out of air!