Phoenix is a fair weather town as most west coast cities are. All of their teams have attendance issues if they aren't not only winning, but legit contenders. When they went to the CFs in 2012, they were selling out. Which is why I never understood the East Valley vs West Valley argument. Fans there act like they're the only fanbase that has to travel to get to the arena.
Regardless, the Coyotes brand just may be too toxic at this point. They've burned so many bridges & lingered in limbo for the better part of 20 years by now. Even if this new arena gets built, I still don't see all their issues magically disappearing.