Xbox One Think the Birth by Sleep protagonists will be playable in KH3?

[CeliVega]

I love Aqua, Ven, and Terra in Birth by Sleep. It's nice knowing how their adventures is actually tied to the "main" protagonist Sora, Riku, and Kairi in a way.
And I know how by the end of Birth by Sleep, it is not that possible to play as Ven or Terra because......spoilers

But it would be nice if we eventually get to play as them, don't you think? Since the Kh3 is suppose to be the final chapter of the Xehanort saga, might as well just go out with a bang and let us play as all the previous protagonists! But then it might be too messy >_>

Would be nice to at least play as Aqua. She's my favourite of the trio