Nice, I've desired to have intra-document links for hierarchical schematics (so you click on a block and it brings you to the page it represents, and you can click an up arrow symbol to up hierarchy). Your tool possibly provides an outline to add this..
It would need to also add object IDs to the final PDF so you could reference them. I'll take a look and see if it's straightforward to do.
Was pretty trivial to add. Done in v0.2 [1]. See the internal link comment in the usage text.