i only sort of skimmed this thread but from what i understand you are talking about how some profs have more useful perk lines then others.
and i agree, but i think that every prof/breed should have way more useful perklines then they can ever use, as well as breed perkline sbeing useful(theres 1 useful perkline for every breed for every prof pretty much)
instead of profs now who have between 2 and 6 useful perklines as well as 1-2 ai ones(this doesnt count general perks), if every prof had more useful perklines then they could use, i think it would make the game more interesting, instead of 90% of a prof having the same perk setup you would get variation.