Put random new posts that don't have any votes on the front page of those who meet a high karma threshold. Currently a single vote in the new queue is a gigantic step towards hitting the front page and being noticed. When that one vote matters so much and there's so much luck involved in getting it before even newer posts come in, it's no wonder people are creating voting rings. I think this could hugely reduce the luck factor in quality posts getting noticed.
Here's a preview of what I'm imagining: https://i.imgur.com/ZNQTn7q.png
