The Problem
In modelling Wanderer on the Classic Traveller LBBs, we come to the inescapable conclusion that the original design did not provide for development of a character's skills after character generation. For the era, there was no precedent that advancement mechanics would be viable (or even popular). Modern RPGs are now an ecosystem of the descendants of games where character advancement was a means of making your character unique and fitting for the setting she was a part of.