I'm sure some people have thought about that before but have shied away from the sheer size of the PS2 catalog. You'd be better off requesting conversions of the covers you need instead of a general conversion for PS2 covers.
Maybe start a discussion in the DVD case forum, too, to see if there is general interest in this and if any cover gurus or othe rmembers would also like to see this happen.
Lastly, don't be disappointed when your request is not fulfilled right away. It may take some time, sometimes it's done the same day, sometimes in month.