I'm a little underwhelmed too, muraria - it's simply carried over from resolving the clashes, where it's essential (and works very well, I think).
Also, having moved on to the theme proper, we do nothing with it. I thought I had a reasonable 'context' for this (albeit of a different nature) but then I saw another possibility, and another... and then I gave up on it.
Still, I enjoyed it - thought it was pretty good for the most part.