Whenever Alteryx recognizes a field as a Date, it should default to Date, not Date/Time. I don't think I'm in the minority, but I rarely need to see the date AND the time. 99.9% of all of my date fields do not have a time associate with them; such as: Open Date, Close Date, Remodel Date, Lease Expiration Date, Lease Start Date, Date Record Updated, Relocation Date, etc., etc., etc. So I always get results like 4/1/2013 12:00:00, which makes it difficult to query against without changing to just Date. I would venture to guess that most people don't use the time either, but I may be wrong. So, defaulting to just Date would save a lot of us that extra step for each date column.