When Sora somehow manages to get Aqua out of the Realm of Darkness, (Which lets be honest that's probably going to happen in KH3, same for saving Terra and awakening Ventus) I would like to see Aqua's face, like "I remember you, you're that boy... From the Island" Or whatever :P
(Hello, I am new :P) Anyways, I think that they're going to release 2.5 HD Remix before KH 3 so that it will be: KH 1.5 KH 2.5 KH 3 Although they announced KH 3 first, I don't see it coming until late 2014/Early 2015.