User blog comment:JakePT/Galaxy at War Effects All Saves/@comment-1341687-20120126183948/@comment-1341687-20120127235620

It isn't more complicated than that. The years I've spent learning game design tell me it is that simple. It is a stand alone system. Then all that needs to be done is a selection to apply towards saves. Do you wish the GaW to affect this save? Once you select yes this action cannot be undone. The most complicated it gets is instead of save is career. Do you wish to affect this career. So replays would be affected. But separate imports and new Shepards have no excuse to be affected until you choose for it to.

You wouldn't have to choose a profile every time. Just the first time and then a separate option to apply the work to new Shepards. It is simple. They just didn't want to take the time to do it for whatever reason.