Doing a little 2fer1. Both involving the poll system.
Proposing that in place of the "You have already voted in this poll.", it would show what you voted. In some areas of the site polls are up for a long time, and I have forgotten what I voted a time or two.
Also proposing giving us the ability to change your choice in the poll. Whether you chose the wrong selection at first, or the discussion in the thread changed your mind, it would just be a nice thing to have, in my opinion.
What it looks like now:
What it could look like: