Sorry if this is dumb, I just woke up and had this idea randomly. What would happen if the site had a built-in mechanic for correction spelling mistakes. It could be opt-in (or opt-out?) if you don't want anyone to bother you. This would allow other people that notice them to ping a comment author privately with perhaps a short message explanation.
Not everyone has English as their first language which is why I think it could be valuable. If the feature is not built into the site, correcting someone would be seen as a negative experience (I think) both in public or private messages.
It would be up to the comment author to edit their comment. (Or perhaps a way to accept the changes would be nice?)
Thoughts? Is this a thing anywhere else?
Edit: I put feature request in the title, but this is more of a discussion of the idea in general. I don't expect this to become a thing, but I feel like it's interesting to think about.