Worldbuilding in Slow Motion

So now that I finished ViNoWriMo (check out keypub.net for more information), I'm stuck in the position that I don't want to touch that novel until the March 14th winners are announced. I would love to start querying, but The Faithful is currently being read by my fiance, with the ending of the novel up in the air. I can't quite be shopping it about if I don't even know what the length or the ending will be.

I have two projects I can work on. I can work on my next novel, which is set in a desert wasteland on the side of a cliff, or rework my first novel, Between the Shadows. I'm stuck in between new ideas for both of these and can't quite decide which way I'm leaning.

On one hand, I have a brand new novel with a new place that I can expand on and feel creatively fulfilled. On the other, I have an old property that I'm giving a fresh breath of life. The old story felt empty, amorphous. With the new ideas I have, it changes so much of the original work that there is no way to keep the original manuscript and build off of it. I now have two more novels under my belt, so many lessons I've learned that it just seems like a flawed concept to keep going back to try and fix the errors in it.

Maybe after I'm done I'll find that the two works aren't entirely dissimilar, but I'd hate to read that old manuscript and get lost in that version of the world and lose what I had been thinking about. It truly is a reimagining where I'm going with it, not just another run through with edits to try and correct fundamental problems with the manuscript.

Here I am, stuck between two projects, each with its own creative possibilities.

I'll let you know where I'm going.