Okay, since I have a few suggestions in mind, and I don't really want to clutter up this board, I'll list them all in this one post.
1) A following system
So, I have a few other friends that also use repl.it, and I think it would be nice to be able to follow them, to get notifications in the website on when they post on repl talk, update their code, or other things like that.
Yes, I know that there is a history page for each repl, but GitHub allows for making branches off the main code, so I was thinking maybe we could have that? (this one may not make as much sense, if it doesn't please ignore it)
3) Mobile app (?)
Title of this suggestion says it all, but I think it would be a great idea to have a mobile app, to code online/offline on the go.
I'll add more when I think of more.