Well, for me, the primary reason for using something like Hugo [and the primary reason I want to sever the reliance on Disqus [and external site search. But that’s a topic for another thread] is that I want my sites to be as self-contained and self-reliant as possible. So, while a subReddit might be an novel concept. For me, it’s just swapping reliance on one third party offering for reliance on another.
Actually, the very fact you have to wonder whether or not Reddit would allow it kind of reinforces that point, doesn’t it?