Well, do tell.
The storyline to my big levelpack is not nearly done yet, so it can still be changed a lot depending on what you like. I'm fine with almost anything. =P
This could also be a help for anyone possibly thinking of a storyline for their own episode.

The choices you have are:

Lighthearted - Nothing serious at all. Pretty much like the previous JJ storylines, I guess.

Dark - People dying. Actual evil things. And action!

Funny - Anything funny, parodies, etc. "Princess Eva has been kidnapped by Devan's pet monkey Kinky Kong! Find the Hammer of Fortune to beat it, and the Cheese of Doom for no particular reason!" Or something like that. =P

Sad/Dramatic - Even sadder and very touching. Or simply touching. I don't remember anymore what this levelpack was called like that told you a story, "Another Story", I think... that would be a good example of real good drama.

Action - JAZZ KICKS BUTT! <- whole storyline

Complex - Bringing some more thought into the world of Jazz Jackrabbit - Are Devan's goals perhaps not that ill? Is there more behind Spaz? Etc, etc...

I guess that covers just about everything.
And my own vote goes for Complex.