>You want to snipe some retard with a cannon you stole from a battleship?
Then you're probably playing Air Raider.
>We got dakka, as well as an array of highly explosive DEATH.
The best weapons require an Air Raider to use, the rest are simply comparable to other weapons for other classes
>All this is amplified in 5 where you get the ability to fucking fly.
Fencers cannot fly; That is an outright lie. Did you mean "Jump Good"?
>you are also never getting hit in the first place
If you're using anything but melee you are for sure getting hit. Fencer weapons fire and recover slower than a railgun turret rotates (and that's very slow).
Now that I've said all kinds of bad words to you, I'll say some nice ones. You're absolutely right, they have excellent land mobility with obviously unintentional deflector/dash combo. They also have high health, a fact that matters sometimes. They also can reflect webs and other horrific projectiles, this is extremely useful.