I think there’s about a zero percent chance AS will open up E at T-24, given that this would probably mean they would be offering super cheap cash F at T-24 (AS’s dirty little secret is for AS redemptions the award cost is pretty much directly linked to cash fare price just like if you were using SkyPesos).They are more likely to just upgrade elites into F by opening U space and leaving E locked shut.

Good luck at finding that unicorn at T-24 though… May the odds ever be in your favor.