4 Stars of Destiny? You can't be talking about the book, since the poll is about an upcoming game... Do you have plans to make a remake of LP1 or something?
Given that you think your upcoming game will have the best story you've ever told in a game, Laxius Party 2 and Lax Team 2 are unlikely. Not to mention that Laxius Party 1 is freeware.
LF2 and BoH2 will apparently both be big games with lots of stuff to do and a very interesting story, so I think it's going to be either LF2 or BoH2.
Aerack seems less likely to me, but you never know. We know little about Aerack, anyway. Until The Very Last Second of Life probably gave us more clues about Aerack's story than your posts ever did.
Anyway, no matter which game comes next, I'll be satisfied.