Hey, i believe Firefox already has the ability to replace most programs out there on anybodies computer such as html and pdf viewers, i believe that every program should be replacable by firefox and that the program should be written in such a way; like an image viewer (currently it's hard to view like albums etc. as you have to manually change between images) and firefox doesn't automatically pop-up in the "open with" section of computers to do much of the actions it can.
