Sorry for the ambiguous title, I'm pretty bad at summarizing things quickly, but I'll try to have a not-to-long post here.
There are a lot of oral_vore pictures tagged with just "vore". There is an oral_vore tag, but it frequently isn't on those pictures, seemingly because the uploader understandibly assumed that "vore" simply referred to "regular" (Oral) vore.

I thought about blacklisting "vore", but doing so also hides "cock_vore" and "unbirthing" related pictures, because any kind of Vore implicates the general "vore" tag.

My suggestion is to change it so that vore, instead of acting as a general tag, just refers to regular, oral vore, and that "oral_vore" should autocorrect (Alias?) to "vore"

No one (as far as I know) seems to forget to tag cock_vore pictures as cock_vore, or anal_vore pictures as anal_vore, but I see a lot of oral_vore pictures tagged with "vore" but not "Oral_vore". I've been doing my best to add the oral_vore tag to those pictures when I come across them, but there's a lot, and there's always new ones.

you can blacklist vore -cock_vore -unbirthing -<whatever> and then only vore posts that contain the types of vore you're okay with would show up. if necessary you could also add oral_vore to a separate line.

I definitely disagree about changing the meaning of vore here; it's a necessary umbrella tag, and it falls pretty well in line with the common use of the word as a term.
If specific uploaders are frequently missing a tag like that, you can send them a message, but it's generally best to just add it as needed. I don't think oral_vore is a critical enough tag to bother with an actual report.

dba_afish said:
you can blacklist vore -cock_vore -unbirthing -<whatever> and then only vore posts that contain the types of vore you're okay with would show up. if necessary you could also add oral_vore to a separate line.

This is a good solution, thank you. I'd already blacklisted oral_vore a long time ago, of course, but I never really thought about doing the rest of that.