One way to look at it is this: what is more fair than taking the points battle to a track(s) that is/are mostly unfamiliar to the participants? It means that the victors will be the TEAM that figures it out the quickest and the best.

There is certainly an argument to be made that the points battle should be decided where the bulk of the fan base resides, but there is a decent non wing fan base in Arizona and California, and what better way to increase both the fan base and participation level than to take the best product available to them so that they can experience it?