mm if Phoenix goes to Seattle... then I bet it'll be Vancouver to the Pacific and not Colorado. That said... they still need an arena.
And... some history for you: They had the failed 76 expansion team... but the lesser known story is there bid for a team in the early 90s. Key Arena was a perfect place for hockey... could seat 15K with no obstructions at one point. Then, when they were a lock for an expansion team, one of the partners walked into the BoG meeting, withdraw the application and proceeded to renovate Key Arena to be NBA only. Hmm, maybe third time will be the charm... Here's a pic of the Arena with a ice sheet back in the 70's to prove my point about the renovation, and notice the lack of ANY obstructions:
They'd probably just move Phoenix/Seattle to the NW and Colorado to the Pacific. Less travel overall.