You can get a decent amount of honor from WG weekly quests but apart from that dailies are your best bet, or farm AV when its AV weekend.

One very underrated aspect in almost every games in positioning. If you die its quite often because you were somewhere you shouldnt be. Best advice is to play smart and with every kill and death analyze your position vs the enemies position. A good position can include a hiding spot for you so you can catch your enemies off guard, it may be unlikely for a horde of enemies to approach it at the same time, easy to see incoming enemies so you can change location if things get risky.
Its true in fps games also, by using a smart location you can replace reaction times with listening to sounds and kill people before they even get to shoot back.

If you play smart and defensively in addition to being careful it will do wonders for your K/D ratio but your amount of honorable kills will probably take a hit.