It’s nice that participants can upload up to 20mb pictures, but the final images are pretty low quality. One of our users built a way of running Costume Contests by downloading the top pictures and adding them to a slide show with corresponding titles and colors to the options on a Poll.
That’s a separate feature request we would love to see: adding pictures to Polls
As it exists, we’d love access to a higher resolution version of Social Wall posts. (Following proper permission processes) It also affords better opportunities to use those photos for promotional marketing.