Does Key Arena have a future?
It doesn't have much of a "now". It's in the city, covered, heated, and seats 17k people. That's it's unique appeal now.
The giant beams that are a 50 year old reminder of past greatness are the bones of a dinasaur, a pet dinasaur.
They should convert it into an amphatheater, strip everything out of it, build a stage on one side, pull half of the roof off the other side, having it to face into Seattle Center's "green space" and fountain. It would be cheap and useful.