I'd rather just give them my money and have a little icon. I don't like the idea of copying Reddit. Even the upvote/downvote thing is cullable if you ask me. The only thing Reddit-like that I enjoy is the familiar UI.
I don't think trying to centralize a community that relies on a decentralized platform is a very great idea. I get what you're going for but I think the little pocket communities add a layer of safety from bad actors.