Well, as of now it's just remaking what I already had.
But I also plan to switch to a more refined scripting system. Which is basically saying - you don't need a manual for scripting right now, it will be completely different )
Maybe I'll even add JS instead of my own scripting language. But that's unlikely.
As I'm rewriting the whole architecture, it will be more flexible and easier to add new features like 8-dir sprites. Yes. I've actually been getting requests for this since the very beginning.