Currently Dynamic Comments are not included in a summary tab of the Raw Data Extract. They are available on the Raw Data tab, but all other text comments are included in a summary tab and I find it much easier to use the comments in this format.
Allow filtering and logic based on the answers to data/reference question types such as zip code or dynamic lookup questions. This would be very helpful in analyzing results based on geographic locations (state, county) and such. It would also be helpful in tailoring branched surveys based on the same criteria... different questions for different states/counties.