well... lets start with my most used kit ever. tsent.
when I first started playing it, I skipped warp.
overload was: damage, neural shock, jump. I figured the highest outright damage would be best. was under the impression the shield/barrier evo was additive like everything else was in the game, and doing more general damage would have been better than a little higher shield/barrier damage.
tech armor was: durability, power, power. for some added survivability and buffing overload.
class passive was: capacity, power damage, stability. added weapon damage and buffing overload.
fitness: full shields.
weapon was mattock, which I think is still an underrated weapon.
NOW, these days, 5/5/6/6/4
tech armor: durability, power
warp: detonate, expose
overload: jump, neural shock, shield/barrier
class passive: capacity, headshot, stability
fitness: durability
weapon is wraith, best weapon in the game.