I'm one who'd really like to be able to analyze the data myself (and I think I asked if this was possible several months ago). I have no preference for file format because I can manipulate pretty much any file format that could be produced and don't mind doing so, but I realize that lots of people prefer to be able to choose a format.
The current export data is absolutely useless for my purposes so I'm having to enter the data by hand now.
BTW, the feedback module is one of my favorite tools. It would be perfect if I could extract the data.