I've always looked at PCs as outliers; 1% of the population that does what they want to do, so motivations arent as important as staying true to the underlying character basis...characters exrtremley out of whack with the societal norm go advertuting to getaway lol

as far as fighters go for this race, the guy that would like to mix it up? The testing would probably winnow him out

However, the way I always see things is this, whatever a dm and a player want to do with the rule ideas they have been given is up to them...when 2e dropped assasins and devils we just lold and kept using 1e rules adaptions