They have leapfrogged DL and AA on the biz class lounge front.
LAX even gets its own Polaris lounge.
First one is ORD B16 on December 1.
http://view.ceros.com/united/polaris-business-class/p/1
I was part of the testing for the lounge (now that it's public...) and they put a lot of thought into this.