If you are playing video games, you obviously like SOME challenge. Winning without a challenge carries no sense of victory. Lets play a game, every time your inhale, you win. YAY! we are all winners. :celebration:
And for some people, that is just fine. If everyone enjoyed a challenge, then they wouldn't have strategy guides, cheat codes, easy difficulty settings and hacks.
I agree with what Oscarmike says - a "concentrate on killing this player" objective, takes away from players utilizing classes and teamwork and working towars the current (core) objective.
This 'Assassination objective' essentially turns the game into a deathmatch variant for a short time (boring), and ultimatley just sounds like something a player thought up (probably one that is going to play Operative) because it is something he personally would enjoy, and not something that is benefical or something that even belongs in Brink, as a whole.