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Have you tried Yate yet? I got into it because I'm creating a lot of needle drops (for want of a better term). By a lot I mean over a thousand in the space of a few years (1.2tb of 96/24 audio) and of course tagging these files is more complicated than ripping from a disk as you start with nothing.
It's a long way ahead of anything I've used before, it can also do things like change the folder icon to the album artwork and operations like that can be automated or batched.
I think i already suggested software for automating ID3 metadata enrichment such as MusicBrainz Picard