Good post.
I think it is a good idea. If you take a look at the proposed map at www.skyislandalliance.org/tumacacori/maps.htm, none of the numbered FS roads would be closed. I could be wrong on this, but I've studied the proposed map and compared it to the Coronado NF map and all of the FS access roads remain open. There is a huge chunk of roadless country in this area that I feel needs to be protected. Especially from mining. You would see very little change in regards to access in my opinion. Nothing upsets me more than backpacking in somewhere and then find someone carving a new trail into the back country with a quad. Keep it wild.