Would suggest you log this with support as an enhancement request - to be able to choose the format for your scheduled publish.
The "idea" of the scheduled publish is to send the PDF reports to executive management - they don't want to see CSV data normally. Since it sounds you're trying to do other things, this would be an enhancement request.
LANDesk EMEA Technica Lead.
Is there any update on this? Would really be very helpful if it was possible to do this!