Ok, taking a shot. One starter item each related to profession (like you said), one major bonus and 1 minor bonus each:
Class
Farmer - Harvest count, food recipe
Fisherman - Harvest count (can you increase fish catch probability?) , food recipe for fish
Chef - Exclusive recipes (uber) , smell
Cop - Pistols, doughnut recipe
Soldier - Heavy guns, armor defense
Chemist - ?
Doctor - +5 med, medical recipe
Fitness Instructor - Stamina regain, Max stamina
Fireman - Seriously? Fireman? Climbing speed ;-)
Construction Worker - block damage, repair time
Carpenter - primitive bonus, repair time
Electrician - I question this one as his material is journeyman and no longer gated by skill. maybe special recipes...
Metal Worker - I question this one as his material is journeyman and no longer gated by skill. maybe special recipes...
Burglar - Loot quality,loot time
Park Ranger - Ranged falloff, crouch speed
My assumption on what a Major/minor bonus might be has little basis except usability in the current system.