Well, I would be enthusiastic to see a sequel for this lovely game, like a soundtrack too. Maybe in future when the time is right.
Heck, perhaps we could throw together our own efforts with you and make the sequel all together ourselves.
Not to offend, but it's clear that Aquaria was a result of small teams ideology. Like everyone with team work experience might know, "too many cooks spoil the broth", the bigger the team the more opinions and aspects to take into account. Disagreement is what makes things difficult, and compromises might be totally different than suggested ideas... the reason why Indie games brings fresh ideas and new unique experiences to us is small team with cohesion. Not that exceptions doesn't exist, but just my two cents.
I liked that aspect the story wasn't too clear; it was strong enough but not too detailed. It allows player to use his imagination more freely. Character relationships, small hints here and there in ruins or expressions... One part of the experience.