Well, I plan on having Lucrix become an antagonist. He's going to create what he deems to be "the true Kingdom Hearts" by initiating the Time Spiral, collecting vast amounts of Hearts from all points in space-time (including alternate realities). At which point, he's going to fuse himself with it, but not before creating the x-blade... and Riluc is going to appear, as well, due to the Time Spiral's adverse effects on reality. However, I may need help fleshing this out and having alternate stories if people are willing to cooperate with this idea.
Well, first off we do have somewhat of a main storyline planned out already, as well as a main antagonist. I'd say that we'd try to work your idea in, however i don't think it'd exactly work as anything less than the main plot.
Pretty much this, but at the same time Rienzel this is a discussion and idea thing so it's fine to suggest just about anything :P Your idea does sound really cool, Sess, but I feel like it's more of an idea that would benefit from its own, seperate RP, not a sequel to LvD1.