Shut the entire thing down for a year and a half like they did Space Mountain. Face it; nobody goes to WDW and only goes to AK - not even locals. AK is a 1/2 day park at best, unless you're willing to venture off the beaten path. Shut down EE, fix the Yeti and MK, EP, and DHS can absorb the additional guests with ease.
People complain about a broken Yeti, but put up with..... a horrible "mine shaft" on the last climb hill of Thunder Mtn, broken screens/scenes galore on Test Track, AAs on Jungle Cruise that haven't worked for years, etc.
WDW will continue to do what's required to attract the "common guest" and get them to revisit a time or two over the course of their lives. We're the warped Disney junkies that expect perfection around every corner. That's just not reality - even if Walt were still alive today. Anyone remember opening day in 1955? Hardly what anyone would call perfection.
The challenge is to continuously improve the brand. As a timely approximation, the NY Yankees are good every year. Do they win 100 games or the World Series every year? No. But when their "hallowed grounds" start falling apart, they build a new stadium. When their coach doesn't gel with the team, they ship him off to LA and hire a new guy. It's a constant challenge to stay on top - especially when there's a huge target on your back. All of the competitors are gunning to take down Disney, and it's NEVER going to happen.