Well it was an idea...
Another idea I had leads me to ask this...
How large of a download is possible surrounding this method. I remember reading that running a file of the External HDD larger than 4gb is not possible due to file size limitations, would it be possible to put an entire game in the patch folder and download to the PS3 HDD via this update download.
and if so... (I am guessing files would be downloaded to some "game save" location) is there a limitation to the size of game saves.
(just thinking out loud now... thats the point of the "ideas" thread)
^I have my doubts about using a ps3 game to push a ps2 file