Secondly, the issue of the same posts being displayed for days under “Hot”. There is already a pull request for this, so it has been fixed and just needs to be implemented:
Adding the "hide" feature from reddit would be an easy fix/stopgap solution. I had a similar issue in reddit when one of my multis included a less active community, so I'd just hide the posts I was done with.
The original was pretty well resolved and it said everything it needed to.