It would be cool to be able achieving titles for achivments that you got for everyone visible with your name (for example Fisherman Baelin, Miner Gimli, Blacksmith Hephaistos, ...)
The initiation of the idea is, that when you live in a village, you most likely start choosing some profession, finishing credos and be a help to the village. So miners go mining, farmer go farming and hunter hunt, etc. When there are only 3 people in your village that's nice and you can perfectly talk to each other, who can do what best. But: the more people live in a village, the more confusing it starts to become, not loosing track of who specialised in what. Worse, to visit a befriended village where you have kined the people, but rarely talk with them exept of a hand full. So if you are looking for the local tailor it would be a great help if additional to the name of a person their profession would be showed, too.
That's the one point. It would also value credos more if you get a title after completing one ;) I mean, it's nice to tell your friends that you survived the normad, but would be a lot more awesome to be able to show it off a little bit ;D
The easiest way for it would probably be to link a title with the completion of a credo, but maybe there are some other possibilities, too, like a title for the village leader, king or queen of a kingdom, or warrior, explorer, tracker, etc. for exceeding a certain amount of stats.
I guess there is still lots of space to work that idea out more detailed :D"