I have a simple suggestion after a few months of using this site - one thing I cannot do is search for circuits based upon the components they use - for example, if I want to find something that uses a specific transistor or chip.
The reason is that these are always specified in the pictures of the layouts - not in the searchable text.
I don't think you need to list every component in every circuit (as you commonly see in schematics) - but if the IC, transistors and maybe any special clipping diodes or other unusual parts you may need could be listed in the description, then I could put "TL071" or "2n7000" in the search box and find every circuit that uses these parts.
Most schematics aren't ours that's why the main page doesn't have them, but a quick Google search will yield literally millions of pages. Check the usual places : freestompboxes.org , diystompboxes.com and then there's places that are schematic repositories. Fuzz central and geofex have a lot. If you want to find them you can.