We decided against it when it became clear that we'd actually have to come up with a backstory to do this. Never explain what you don't have to.
So we thought about the classic Saul Bass look:
Or, more likely, this:
I think we've settled on making the typography do the majority of the heavy lifting when it comes to visual interest. Here's one of our prototypes:

With a little color and motion (in the strict Northanger tradition of tasteful restraint), I think they're going to look terrific.
Finally, since I seem to be piloting the blog ship straight in YouTube Shoals today... Motorhead!