I’d also love to see this added. I understand that it’s not a simple request to add a feature like this, but the ability for users and mods to reply to specific comments would be incredibly useful. Being able to reply directly from the admin page would be nice as well, but that’s less of an issue to me.
On a related note, is there a list of planned features that us shop owners could look at and upvote/downvote? That seems like it would be a great way to know what features to work on in what order.