If the user experience and overall management of the sources in each profile was not so painful, I don't think this would be as big of a problem. It would be nice to be able to lock source packages, compare other valid source lists from players, and manage more than one "default" option at a time.
Having to scroll through 20 tiny screen-fulls to get a bunch of random check-boxes through-out is a classic example of UI/UX design that did not appropriately consider scale effecting.
