Personally, I usually put cases like this into a project (there’s two projects I joined for galls) and hope that “identifiers with relevant knowledge” happen to be a member.
This is an interesting suggestion, though, even if limited in scope. I say limited only because I’m thinking about cases where the active ID would still be SOML because there is no common taxon:
To use galls as an example again (since so many things cause galls), if one IDer thinks it’s caused by a fungus, and another thinks it is caused by a bacteria, the active community ID will still be SOML. Or outside of galls, one IDs as Fungi and the other as Slime Molds. Or one IDs as Algae and the other as Cynobacteria.
Nevermind, I misunderstood Active ID vs Community ID