Would it be possible to add the ability to comment on someone's run that they submitted. I feel like it could give runners the opportunity to be able to encourage others of they don't have an alternative way of talking to them. (I know that lots communities have discords)

Just an idea.

Also

When will messaging be ready? The icon is a terrible tease.

Too easy to abuse. Too hard to moderate.

Between this, this and this, I think the idea has already been discussed in full and the idea is being worked on.

As for messaging, it's in production. Not sure how far away it is from being finished, but hopefully it's close-ish. :)