Something I would quite like to see after looking at this post: a poll of LW users' stances on polarised political issues.
There are a whole host of issues which we don't discuss for fear of mindkilling. While I would expect opinion to be split on a lot of politically sensitive subjects, I would be fascinated to see if the LW readership came down unilaterally on some unexpected issue. I'd also be interested to see if there are any heavily polarised political issues that I currently don't recognise as such.
Why would this be a bad idea?
I would be astonished if one result of such a poll was not quite a lot of discussion of the polarized political issues that we don't discuss for fear of mindkilling. Whether that's a bad thing or not depends on your beliefs about such discussion, of course.
Also, if what you're interested in is (a) issues where we all agree, and (b) issues you don't think of as polarized political issues in the first place, it seems a poll is neither necessary nor sufficient for your goals. For any stance S, you can find out whether S is in class (a) by writing up S and ask...
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.