I'm going to make a few EWAGs here about extending the various events.
WoS has already stated that if they were to extend their event -- it'd be by adding a day at the beginning. Here's my EWAG: I doubt that they could move it more than that one day because of the time required to set up the courses and the time required for the Motorcycle meet to clean up and clear out. That event is only a few days before WoS anyway.
WoS can't be extended by running it later because Mike Cook's Shootout starts right after WoS and therefore USFRA has to clean up. Yes, Mike's Shootout is on a different course and a couple of days later than WoS, but course grooming, including where the International course crosses the USFRA courses, take some time. Don't hurry -- do it right.
Then there's the issue of getting permitted dates from BLM. The various events get those dates well in advance, and while I don't know for certain, changing them/extending them takes more than just a phone call saying "Please may we have a couple of extra days?" I won't even add the potential of there being other permits granted of which we know nothing (private time for anything or anyone).
I'll let the groups and BLM and the volunteers do the thinking and calling and wrangling on this subject - as if I could offer much in the way of "new" news anyway.