Interesting but unfortunately a lot of stuff isn't there I would be interested in - Birthright for example. I'm not sure if it is still there but they used to have a lot of pdf's for free on the wotc site - lots of source books mainly but quickie adventures as well. 2nd ed mostly.
Re additions - Pathfinder is actually a pretty fun version but when someone asks if they can do something with a spell I always say 'well you roll your spell mastery, never mind'.