Incorrect spam check workflow

We have antispam and comment_notify on a site. Antispam is higher priority than comment_notify, but because antispam uses _form_alter + #submit to check comments for spam, it runs after comment_notify. So the order of execution is:

comment_form_submit
  * ...
  * antispam_comment
  * ...
  * comment_notify
  * ...
antispam_comment_form_submit

antispam_comment hook doesn't do any spam verification. this is done by antispam_comment_form_submit.
Due to this workflow, antispam_comment_form_submit unpublishes comments after other modules processed the comment as published. In comment_notify case, that means emails are sent out (because comment is published), but imediately after the comment is unpublished.

IMHO the correct workflow would be for antispam_comment to check AND unpublish the comment so that other modules implementing hook_comment to see it unpublished.

Cheers,
Andrei.