Currently, when running reports at a 'daily' granularity, the date format when downloaded (into .csv or .excel) appears as e.g. "Nov 1, 2011".
This format is very problematic when dealing with reports in Excel and always requires a transformation. It should instead be populated in a format that Excel could recognise as a date.
This is particularly an issue when extracting Data Warehouse reports, where one is likely to have many rows per single date and it is therefore more time-consuming to transform into actual dates.