I must be missing something obvious, but I can\'t figure out how to rename my project in Xcode 4.
If I remember correctly Xcode 3 had a dedicated menu item for this
Renaming the project is really the best way to go.
Here's what I do In Xcode 4.3.2:
I make custom accessories with a bunch similar backend frameworks and icons. Nothing is perfect but this is a fast way to save a bunch of configuration clicks when apps have a lot of similarities.