You're welcome Jamie, I hope it is useful!

> but it would be great if once exploded out of the solid
> the surfaces found the curves that made them so the
> remained editable.

So unfortunately trying to make some kind of persistent deep linkage between objects like you're describing is not really something that's feasible to cook up with a script.

In the future I do want to work on making some deeper history functionality, but that will involve a lot of new core mechanisms and not just scripts.

The way that I would hope to get it working eventually would be that you could set up your curves, create surfaces from them, and then use boolean merge to make the solid part, but each of these steps would be remembered so you could then edit a curve and then those actions would all recalculate.

- Michael