You couldn't have asked for a better time to throw a For Sale sign in the window than now if you're the seller.
I'm not worried about any new owner(s) moving the team at all. For one, it would be a spectacularly idiotic decision to try and relocate the team. Second, what city in this country is a realistic destination? Third, the League's reasoning back in 1996 against Ken Behring moving the team was there would be no NFL representation in a significant region of the U.S. and that is still relevant today. If there was no franchise in Seattle, a legit 5 states would have no nearby team. And, last but not least, the optics of green lighting a Seahawks move for any new ownership from the PNW with the rabid fan support we've had for a half century now would be a really terrible look for the league office.
My only concern is we get a dunce who meddles too much and drives away quality management and coaching like the Browns. But, there again, the Allen's leadership/management over the last 30 years have provided an excellent blueprint on how to successfully manage this franchise. It would take a real egomaniac/moron to blow up a proven model with this kind of money involved just to try and reinvent the wheel.
Just my .02