Mulle,
One thing that you can do, even though it's not within the story, is create a topic in the forum associated where you have your work uploaded.
For example, if you publish in originals, you would go here, choose the appropriate forum and make your topic. Not only can you make responses as long as you want, individually if that's your preference; (start topic, make an individual post to the topic to each reviewer) you're also not limited by word count, unlike in the archive. In the archive, if you have an AN that exceeds 600 words, you can't do it, and we do say something to you. You end up having to edit it, or potentially losing all the work. Anyway, after you make your topic, you put a link in your story (I know the html is not clickable, but it is easy enough to copy/paste or highlight link/follow link) and your readers will see your replies. Not only that, they can in turn respond to you. Without logging in, or creating a login.
I do understand authors wanting to respond within the archive, and having their readers respond there as well, but as I've said many times before, the code simply does not support it. Not only that, with the size of the archive database itself, it's much healthier for it, if the answers are redirected to a program which can handle the load better. That has everything to do with how each program handles data inserts, but I won't get in to that here.