I appreciate the mob filter, and was wondering if the same functionality can be implemented for treasures? For example, I am sick of getting notifications for mushrooms in Korthia, but not other treasures.

That's actually already there. (Or is now? I forget exactly when I added this.)

In the Scanning options, you can tell it to ignore specific vignettes.

It populates the list when you see them, so you just need to encounter a vignette you're sick of and then you can check it to ignore it.

You can also right-click the close button on the popup, which will do the same thing.