I'm not sure I could live in Seattle but man do I love visiting. Definitely one of my favorite cities in the country. Two things:
I love Safeco. Catching a game, especially when you have perfect weather, is about as good as it gets. Just love the vibe. Never been to Century Link to watch the Seahawks. Maybe that will happen sooner than later.
I also think, when done well, urban parks are pretty bad ass. Nothing like just chillin' blocks away from the hustle. I had booked a family trip in June. Really bummed we might have to cancel but I'm trying to stay optimistic. If we do come, I might hit you guys up for the best parks in the city. That would be fun to do our own little tour.