I have a nearly-four year old character with over 4 million XP, and he still looks as baby-face fresh as the day he left pre-searing. You'd think after all his battles, campaigning and continent jumping (and the million foot-miles it takes to become a Master Mapper) that he'd at least have a stubble, maybe a scar or two, perhaps a slight limp, bags under the eyes, or even a beer belly??
Any thoughts of having characters evolve a slight change in appearance, say every million XP?
Just a thought.