I'll join.

I propose the creation of an Elf Union,
Starting as a division of the Department of Control of Magical Creatures (only because it already exists) and then branching out on its own.

The Elf Union would discuss and propose laws to protect Elves who are still enslaved, would define "abuse," and would work toward a law that would allow emancipation for abused slaves.

We would eventually create an agency to manage alleged cases of elf abuse, similar to what muggles have for child abuse. Maybe elves who do not want freedom could be reassigned to a relative who is nicer?

(Is this FanFiction or RPG?)