I did a search on this before requesting, so apologies if its come up before (and it seems likely).
A very simple but nice feature would be a “save & remove” button in the context menu and a keyboard shortcut (e.g. cntrl + alt + s or something).
I’ve been working my way through some ~30k tracks. Once I’ve confirmed I’m happy with the tagging, I save the album and remove it from the right panel, to slowly make the process feel more achievable and avoid confusing myself. Being able to do it in half as many clicks would be really nice!