Though I'm guessing this suggestion won't appeal to all of you, what AK needs is another great all-ages ride (young children can ride, but adults also enjoy).
If you have ever been to AK with young children, then you probably noticed a lack of rides for this age group.
They get the safari, Na'vi river, and dino-Dumbo. Maybe It's Tough to be a Bug? But only if they aren't afraid of Hopper or spiders. If you've ever attempted to do a family split at AK, then you too have likely spent too much time on dino-Dumbo (while others ride the bigger rides).
I have nothing against cute triceratops, but dino-Dumbo has far less charm than Dumbo, Aladdin-Dumbo, or even the watery Seuss-Dumbo. Dinorama just doesn't make for particularly charming scenery.
As for a specific theme, I don't have anything super specific in mind. AK could perhaps benefit from something themed to Australia, South America, or perhaps Antarctica. A dark ride where we see life through the eyes of a penguin?
Maybe we could have a water ride themed to the Amazon? With a few small drops like PotC, animatronic Amazon critters slightly Small World-ish, and just a hint of a Splash Mtn-esque opportunity to get wet? Maybe we are ants, and we encounter Amazonian Archer fish squirting at us? and we have to survive rain, a flood, an anteater, a fire, and we are leafcutter ants who have to collect leaves for our fungus farm?
Perhaps AK could add a mild version of Crush's Coaster from Paris (though milder, because the Paris version has a 42" height requirement.)