You’re right. But I would like to stay compatible with other plugins who could alter the comment form as well. If every plgin use its own custom callback, it would be a mess.
I have managed to add additional fields on comment form. Now my goal is to pass the values of these new fields in the ajax call, to be able to use some hooks like ‘bp_activity_comment_posted’ and more…
That’s why I’m asking the best way to pass additional data.