Nested replies in forums

The new forum feature is amazing and a necessity for Discord. However, I feel like it could be improved by letting you nest replies. Like on Reddit where you can reply to individual replies.

Basically here's how it works:

OP: [post]

> Commenter A: [reply to OP]

> > Commenter B: [reply to A]

> Commenter B: [reply to OP]

> > OP: [reply to B]

I feel like this would add more to the forum feature and encourage more back-and-forth discussion in forums.