*IF* you only wish to make minor changes, such as what you could do via the Editor and a .MOR then yes you can. Using the editor you can export the .MOR from the saved game and make limited changes (make-up, hair, eyes, etc...) Without my resources here I can't directly check but from one of my DA2 mods, "Open a saved game within the Editor. 0 --> 16002 --> 16208 --> 16950 SAVEGAME PLAYER MORPH.". Right click and choose Export. That will be your MOR file. After the changes repeat the process but this time choose Import.