The main point of the Operative is to wreak havoc through means other than "get behind enemy lines and then simply nail 'em". Operatives are not designed to kill
You're kinda missing the point, EVERY class is designed to kill, your play-style might say otherwise.
Im gonna be a medic first, then Operative. When im operative, im gonna KILL(+1) most enemies i see, using disguises(+5) to get more KILLS(+1), and interrogating(+5) to find more enemies to KILL.(+1)
Hacking(+5) Turrets, and using them to KILL.(+1)
I do understand your point your making though. Medics to me are the only Class, that shouldn't be focusing on mainly on kills as much as the other classes.
( Off-topic ) Does Operatives have a quicker rate to capturing command posts? In my honest opinion, they should.
Its actually hard to explain how each class is a Offense and Support role. Good thing they made the game to revolve around your Game-style.