it would be so much cooler and make them some profit on old games if they were to take the time to do quick trophy patches for most of thier games (blog.us.playstation.com)
One more thing, GTA4 got Trophies patched on & it's an older game than MGS4. (blog.us.playstation.com)
Also there should be trophies patched in along with DLC, that's holding a lot of people back since people love trophies now. (blog.us.playstation.com)