As much as it is interesting to read polls of what feeds many would like to hear, it really is an exercise in futility (with all due respect, of course). This site exists primarily due to the generosity of Dave, the founder, but it also exists because of the many, many volunteers who volunteer their time, equipment, and always-on Internet service to send feeds from around the world.
Having a poll will not help get your favorite feed up and running any faster because the founder has relatively little control of who actually comes to him with a feed site.
If you live in a city of an airport that you would like to hear and assuming you cannot provide the feed yourself, you are better off printing the LiveATC.net flier (found here http://www.liveatc.net/LiveATC_flyer.pdf
) and posting it around the general aviation terminal of your favorite airport.