Omega Torsk wrote...
That would be an interesting idea, but I'm not exactly sure it would be possible in terms of consistency unless Bioware implements a program that tailors Hannah's skin, hair, and facial features to Shepard's (seeing as how Commander Shepard is fully customizable). Although Fallout 3 proved this to be possible, I don't see Bioware using the extra effort for such a minor character. A minor character that is only present in 1/3 scenarios. Most likely, we'll get another sound bite or e-mail...
But who knows? They may surprise us! 
Actually, programming this in wouldn't be all that difficult. The engine already supports custom faces. Most NPCs' faces (ones that are built using the custom face creator) are comprised of data sets that tell the game how the engine should render their faces (each variable for the nose, nose height, nose width, etc. influences those data sets). It could be as simple as creating a file for Shep's mom simply by importing certain values from your Shepard's face.
If your Shepard had Nose = 3, Nose Height = 12 and Nose Width = 16, the game would import those values to the file containing Hannah Shepard's model data at the start of the game. When the game tries to look for the file containing Hannah's model data, there could just be an exception written in to make the game look for it inside your save file.
Something along those lines, anyway... this is my idea of how ME's face generator works.