Sarcasm off, I am gonna play archer and Im totally cool with the game as it is. Why dont you see many archers you ask, because its a very hard class to master to the point of being efective. And most people, Including you and me, come to this game for its simplicity, if people would like a more complete and complicated game they would be playing wow. Anyways, archer will never be a 1v1 class, soloing with an archer its not really effective unless KSing the big group. An archer is a party pk. Thats it. Even more, its role its "parasite sniping" and "priest protection" along with a good usage of the styx.
It isnt fair to compare an archer to an assassin. Thats why they are called assassins, they are suppoused to do a lot of dmg in very few time, and an archer can hit from far away 300% which is around 500 dmg on other rogue? something like that.
And for last, archer is not a mellee class, its a range class. If you improve range or give more benefits regarding dmg to archers, mages should also be improved in their range dmg spells.