I'd be lying if I said it didn't make total sense. One potential issue is that a lot of the eastern cities that would probably lose teams are comfortable with their status as a minor league city...something that is generally hard to find in the west. The biggest reason that Wilkes-Barre/Scranton has a team is because of it's ideal location in terms of the AHL...but after that it's also because WBS/SWB is a minor league town, and comfortably so as a town roughly 2 hours from New York City and Philadelphia, about 4 hours from Buffalo, 6 from Pittsburgh, etc. When you're talking about minor league teams travel costs are a huge thing...and it's (much) harder to find those mid-sized cities in such close proximity in the west. A western state may have as many candidates as an eastern state, but it's also doing so at multiples of the size.
I think a western league is inevitable, though, but there will be some serious losses at the start as travel costs will be much higher and there won't be the built-in fan base. A good deal of east coast farm teams exist largely as a geographic claim on a region, something that doesn't really help the western teams as much as the eastern teams (Abbotsford is an extreme example, but I will return to WBS as a region that is midway between NYC and Philadelphia, and closer to New Jersey, Buffalo, and Washington than it is to Pittsburgh...and it has worked to extend the Penguins' reach into NEPA extremely well, a region that generally has little in common with Pittsburgh aside from being in the same state. Needless to say, Edmonton having a team in Oklahoma City doesn't really have that same geo-political impact.
All I know is that I'm glad that Pittsburgh owns their team in WBS, because they've been great fans through and through and having that team there has been a huge advantage to growing the Penguins' fan base...but I'm surprised it's taken this long for the issue to come up. What is the utility of Los Angeles having it's farm team in New Hampshire?
MLB's affiliations don't always make complete sense, and they're the best comparison for an actual minor league system (considering the NBA's is half-assed and the NFL doesn't have one). A damn good example would be that I live in a city who has a rookie ball affiliate of the Arizona Diamondbacks (who have had this franchise as their affiliate from day one of the D'Backs existence, back when the Osprey were in Lethbridge) despite there being a freaking Arizona League at the same level. Difference there, though, is that nobody is going from rookie ball to the Majors without being injured, and when that happens teams know that Player A is going to played X amount of games in Missoula before being assigned to the Reno Aces (DBacks' AAA team), where he'll play X amount of games before being brought back to the Diamondbacks. When teams need an instant call-up that becomes significantly harder...which is why the Diamondbacks' AAA affiliate is in Reno, which is fairly close to Phoenix, but most importantly they're in the PCL...which plays their games in the western U.S. The Pittsburgh Pirates changed their AAA affiliate in 2005 from the Nashville Sounds to the Indianapolis Indians, a move that would appear fairly lateral on the surface...but the Indians are members of the International League, which, despite it's name, is found mostly in the eastern part of the United States. The Indians are the westernmost team in the league. Nashville (now Milwaukee's farm team, and formerly the Pirates AAA team...it was essentially a AAA team swap between the two franchises), on the other hand, is the Pacific Coast League's easternmost team (one of only two on the eastern side of the Mississippi). Why Milwaukee let this happen, I'll never know. The Seattle Mariners have the Tacoma Rainiers, the Colorado Rockies have the Colorado Springs Sky Sox, the San Francisco Giants have the Fresno Grizzlies, etc. Most MLB AAA affiliates are close enough that the player can get to the team's city within a 2 hour flight...but there are, of course, exceptions. Seriously, Toronto...Las Vegas? There are no other comparables in AAA baseball, Toronto is the only team dumb enough to do such a thing. Though, I have to admit, it is entertaining to see that the Indianapolis Indians play in the same division as the Cleveland Indians' affiliate (Columbus Clippers). It's hilarious to see a minor league team that's had the name of a major league team name for longer than the major league team (Cleveland Indians dates to 1915, previously being the Naps; Indianapolis Indians dates to 1902, because...well...do I really need to explain the name?).
If there's only one MLB team with their affiliate outside of a reasonable recall range, and they carry 25 players on their roster (and usually have a couple guys that never see the damn field anyway) why wouldn't NHL teams want the same thing? There's two less active roster spots on an NHL roster (all 25 roster spots on a MLB roster are eligible for play; an NHL team can only dress only 20 of their maximum 23 players) and a greater chance for an injury recall to be necessary on a day's notice. I've never seen a situation where an amateur player has had to play for a baseball team...but I've seen two situations where this had to happen in the NHL between just the Penguins and Canucks in within about a 5 meeting span. Chris Levesque, a UBC third-string goalie, was the back-up to Canucks goalie Johan Hedberg in a 2003 game because Dan Cloutier was unable to play and the Manitoba Moose were on an east coast road trip...he almost had to play because Hedberg got hurt in the game, but Hedberg recovered...on the flip side, John Curry was set to be the Penguins' back-up in Vancouver as normal back-up Brent Johnson was hurt (shocking, I know)...but a couple hours before the game Marc-Andre Fleury got hurt and the Penguins needed an emergency goalie to replace him. Curry took the starting job and quickly allowed 5 goals on 14 shots...the Penguins had recalled the only player in their system in the WHL, who happened to be a goalie who'd only played 5 games in North America in his life...he was wearing a random jersey number (he wore #20 usually, but the jersey that the equipment manager had that fit him was #40), his name was misspelled on the jersey, he didn't speak a lick of English, and he was wearing Marc-Andre Fleury's too-big equipment...he still got third star of the game...pretty ridiculous stuff. Pechurskiy went back to Russia with a career 1.69 GAA and .923 sv% in the NHL despite never actually collecting a paycheck...pretty ridiculous stuff. As cool of a story as that was, I'm pretty damn sure the Penguins would rather have had Brad Thiessen as back-up and the Canucks would rather have had Alex Auld as back-up.