As was just brought up in the discussion about the vote, the current markdown-parsing in the comments is causing quite a few bugs and the associated convenience might not be worth the costs of the bugs. We now have an experimental option in your user-profile to switch to a pure markdown editor, so it might make sense to just remove the automatic markdown parsing from the comment editor and have it just be a pure rich-text editor.
I left two comments that you can vote on to decide between the options.
It's not super high on our priority list and I didn't see them used very much on the old LessWrong, so we don't currently have any short-term plans for them. In the long-run, seems quite likely we will get to it eventually but the timelines are quite unclear.
If a good chunk of people express preferences for polls, then I think it would make sense to move them earlier (or if someone makes a good argument that they are particularly important for making intellectual progress).