I totally agree with the mindset; however you need to adjust for the fact that (a) some of those cities are WITHIN the border limit of existing teams. Providence is off the table for that reason, and San Bernandino is over 50 from LA, but not over 50 from ANA.
The other adjustment that needs to be made is that the revenue required to support an NHL team ($190m USD) vs an NFL ($580m USD), MLB, NBA ($350m each), MLS ($75m), CFL ($20m ? Correct me if I'm wrong there), or any other pro sport is not equal.
When you adjust for the amount of dollars on a per person basis, the financial ability of a market to support an NHL team:
Under $150 per fan.
Hartford
Virginia Beach
Austin
Louisville
$180-$230 per fan
Portland
San Diego
San Antonio
Houston
Atlanta
Quebec City
Phoenix
Sacramento (after the A's leave)
$360+ per fan:
Oklahoma City
Memphis
Birmingham
Indianapolis
Jacksonville
Kansas City
Milwaukee ($575 !)
New Orleans ($815 !!!)
Of course, that says nothing about each market's "demand for hockey" or "arena building potential."