Perhaps a star award for a player in the game 5 years or more... might help the newbies when they need to get some info ...
But that would get reset if you break your sub at any time.... So... it wouldn't recognize a pilot that's been in the game for 17 years but has had several different handles and several gaps in subscription.
Considering the amount of nonsense about gameplay mechanisms or equipment I have heard by long time AH players, I wouldn't base credibility on 'years in game' at all