I read your reply on reflow. Of course you can do this with Calibre, and it's probably the best way to go, but especially when you have to do a lot of PDF (or Word-doc) reading for your work it's most convenient if you could just hook up your Kobo reader, drag the PDFs on the disk, disconnect hop on a train and start reading. So a simple implementation would be nice.
By the way, can anyone of the moderators merge the two firmware suggestion threads? Would be most convenient. Thanks.