I think the feedback is some kind of guestbook. And DNN seems doesn't have a guestbook module it self.

Is it possible to add a comment to feedbacks from users?

I know the feedback comment module, but the setting I got are only

Hide Email, Hide Name and Hide Subject.

What I need is I can reply some comment of the users. It quite common of a general website. But the current solution provide by DNN is too complicated(Forum) or to simplify(feedback).

It like a simple forum but need anonymous post and it doesn't support by current DNN forum now.

Actually I really dont want choose such common module from 3rd party's solution because many 3rd party's dnn module would depend on the core dnn framework (ex, actually I tried other guestbook module but when I upgarde to DNN 4.8.0, it cause my site dead. I really don't like this happened.)and guestbook module is really not so complicated. So I wish I can find a good solution from DNN default module itself. (Maybe UDT or Repository??)