Hag coven substitute?

My players and I (dm) just finished with a homebrew campaign that included a hag coven as the main villains. My players told me they wanted a fey adventure next so I thought this would be perfect, but I’m worried they may be tired of dealing with Hags. Do any of you lovely carnies have a good replacement for the Hag coven? I know it is a lot asking to change the villains of the campaign, just figured I’d ask around.