Everyone on the internet nowadays has up/downvotes. But this seems a bit one-dimensional to me. What about left/right votes. That way if something is leftwing and seems bad I can give it a left vote and a down vote without people thinking I’m right wing. If it works, maybe you could even add in and out votes for if something sounds like it comes from someone who is part of the core user base of a sublemmy or part of the outgroup.