a cheaper one to produce makes sense - without usb ports though, nahhh cant see it (this cant add too much to the cost anyway so why it would make it drastically cheaper is beyond me) especially as they are required for controllers not to mention probably other things coming out.
LBP, Home, GT5 Prologue, not to mention all the others due before Xmas will attract a lot more potential customers (not to mention thats its that season anyway)
BR is only not worth it to those who havent actually tried it (some of the media isnt any more expensive than premium sd sale on the street, so even the price doesnt matter) not suggesting people will rush out and replace their dvd's they already own, but for new simultaneous releases I think it certainly makes sense,