I dont know of anybody that have removed their XREAS yet. Plenty of spacer kits availible for XREAS now, so you can check those out.
If you want to go with a new spring/shock/coilover lift, I only know of a few options avalible. I would say wait a while to see what is availible next year or so and just use a spacer kit as a stop gap.
I'm on XREAS and on spacers for the time being. I went Daystar, but feel that a bit more lift would have been better, especially in the back. The skid on my fuel tank had to bear the brunt on a couple of occasions with the low back.
Revtek seem to have been the flavor of the day, and now NE is getting some traction as well. Daystar have a few as well, but seems to be playing second fiddle to Revtek.
As to removing the XREAS, it is very possible. It is however a relatively complex operation. You have to lift all 4 wheels of the 4R of the ground to take all pressure of the shocks (all of them). Then there are dosconnect points for all the shocks, also for the center balancer pieces on the frame. Once all this is off you can remove the lines. Then just put in whatever you want. As 4route said it is descibed in the repair manual, also option for disposal.