Seattle was 1 no vote away from getting the coyotes in 2013. There are plans being worked on for a NHL arena for a team in Tukwila, washington then there is the issues with milwaukee and they could relocate to Seattle taking care of the team issue for sodo arena.
If NHL had no choice and they rather not make the league more unbalanced they would give it to Seattle (more leverage to get NHL first deal done for sodo)
If coyotes to Vegas who's going to be Seattle expansion partner (no its not going to be quebec due to inbalance problems). Portland isn't going to give NHL a good to high expansion fee.
I think there's only really three options right now. Vegas, Portland and QC. Seattle needs an arena, and I don't think you give a place a team to get an arena done when there's options that already have one. Portland doesn't want to pay, QC and LV are open to it.
I love Seattle, it's my favorite city in the US, but it's not so valuable or such a slam dunk that you put a team there with an arena on the come. I just don't see it. Maybe a few years ago when QC was still QC, Portland wants a deal, Houston doesn't want a team, Kansas City didn't have an owner and is happier with Taylor Swift concerts anyways, and there wasn't any other move.
There are options now. Portland is still Portland, Houston still doesn't care, Kansas City still likes Taylor Swift and college basketball, Seattle still doesn't have an arena, and Vegas has proved it's ready by jumping through hoops no other city would have to jump through and doing that feat quickly.
I see Seattle as the 4th best known interested option as we sit in our seats today.
Portland -Ready to go with if they'll pay.
Vegas -Ready to go in a year, will pay, has a temporary venue until the new place is done.
QC -Ready to go, still in the east.
Seattle -Needs an arena, no real viable temporary spot.