But you can DO BOTH.
And it's actually smart to do both. I know I mentioned this a while back (like 2013) when I was reading tea-leaves about rumors of "Quebec and Markham after the new CBA" and "Coyotes might go to Seattle... or Portland" and then they expanded with Vegas...
If you were going to grow the league from 30 to 36, you'd want:
Slam dunk successful markets (Quebec, GTA2/Markham)
Probable successful markets that open up the Pacific Northwest (Portland, Seattle)
A big TV market that will most-likely be solid based on a peer success story (Houston)
An experiment that would bring massive media attention to the league (Las Vegas)
That's two eastern time zone teams, and four non-ETZ teams, providing balance and happiness.
Another expansion/relocation article with a twist