Anakin born and, raised on Alderraan. Before he became Vader last he knew all his family was there and, Obiwan. Tattooine not shown at all. Empire would be around and, the Emperor would only be talked about. Degobah is the meeting place for the jedi as well as the place for all commerce. Vader lead the assualt on Degobah and, thinks he killed Yoda in Episode III.
So I think the PT atleast needed not to show Tattooine....
<edit>Oh yeah and no Jedi Temple....
