Spam and abuse sucks.
That's why I'm building https://fedithreat.net with first class support built-in to Pixelfed and Loops.
Admins will be able to share intel and optionally participate in automated actions that meet their trust matrix threshold.
It will be like you have hundreds or thousands of moderators on your side that protect your instance from abuse automatically.
FIREs and shared blocklists supported too
Operated by a trusted entity with audit logs. Or you can host it!