The Kett

In short, Kett is no more issue then "choose the right kit" issue and have decent teammates issue. You can get away with a bad kit vs Outlaws or Remnants more likely but not vs Kett. I'm usually playing with Infiltrators, Soldiers or with Barricade Sentinels and with the some heavy hitting guns and have zero problems playing vs kett. I'm not talking about Vanquisher because other guns are also certainly ok. just to be clear about that. With that i doesn't mean you have to always play a with a gun based setup and not with casters, just that I see too many people playing vs Kett with not really good kits - i mean with bad guns or with powers/power combos doing jack shit damage in general. In this state of the game with 90% of the guns being terrible and most of the powers being underwhelming you must know which gun/character is gonna cut it, and which doesn't. And don't be stubborn to use something else and realize if your character/power/gun combo is clearly not good enough.

Pros:

The ketts' heads explode if you headshot them.

Anointed are really fun to Backlash against.

Ascendants are also fun to Backlash against and redirect that giant fire orb back to him or to nearby mooks(hard to pull it off but satisfying when done so).

Cons:

Blink-Fiends are the cancer that is killing fun.

Ascendants kinda-sorta do it too, but at least they are noisy when they do it.

Destined can step on tons of lego pieces, all day every day, till the end of time. *stupid infinite stealth grumble grumble*

People talk about the sync killers all the time.. but in my experience, those aren't the Kett's biggest strength. The best thing they have going for them in my opinion is team speed. Overall they are the fastest faction.. the one that can reinforce their position in the shortest amount of time. This is most evident on Hacks and Uploads.. where you mow down 8-10 enemies, and they're all back in 10-15 seconds. Add to this that they get three dogs at a time, where the Outlaws only get two.. and because of the Destined, they can reinforce/advance unbeknownst to the team. The only slow unit is the Ascendant.

Those dudes with the machine guns is what do it for me. Once in sight of two of them, you better not be caught in an open area trying to escape. They sneak up on you without a sound too. Like right next to you for some reason.

Or just garbage teammates in general. Period.

I'm actually surprised how many chose option 3. I wish I played with more of you people who voted option 3 rather than garbage teammates.

Option 1 is usually the first thing that comes into my mind when I think of the issues with Kett, but now that you guys bring up option 2, I'm kinda leaning towards that now, honestly. It seems like Destined are so abundant, that they're pretty much a standard enemy (with shields and cloaking and are just major bullet sponges) in gold. Also, precautions can be taken with regards to option 1. I usually stay like at least 15 metres away from any fiend or ascendant I see. The feeling when you get sucked in to the sync kill is just indescribable. 

I also totally agree with the other user who mentioned the Kett's speed. Sorry I'm bad with usernames, I'm still pretty new here.

There I fixed your post including the Shakespearean level of drama.  The kett are fun.  If you played them 1/10th as much as you played Outlaws on Firebase Zero you would know how to play against them better and you would figure out that the Kits/Weapons/Tactics that work against Outlaws on Firebase Zero don't work against Kett on any map.  The Synch-kills combined with how Fiends appear to be viewed from Car Rearview mirrors is the only major problem.  The rest can be handled with fine-tuning.