I’m going to give it a week to see what everyone says, but right now I’m leaning towards (based on replies) strongly encouraging (but not requiring) posters sending an opt out message with a three day waiting period for a reply and then having a takedown policy for anyone who’s been reposted here who doesn’t want to be. More work for me, but I feel this might be a good middle ground. I mirrored my account on reddit so no one will have to make a Lemmy account to ask for a take down.
I did also reach out to the reddit mods a week ago asking for some guidance on how they’d like to link up, but I haven’t heard anything back which is why I decided to leave it to the community here.