Do you want the option to have a beard? Would you wear one? If yes what style do you want?
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Should make it progressive. You select the option to start growing a beard, but start clean shaven (after all you have just been resurrected) Then with every campaign you complete of the story mode your beard grows a little more and you become more battle worn. Same goes for the armour. Start with shiny stuff and it gradually gets beaten up. Let me show off my battle scars!