If you are fire main and plan on being one for a while, one thing not many people know is the mirror passive ignite bonus damage buff works on everyone in 3v3, so having a lot of ignite is pretty good.

As for some teams with ninjas you mentioned.

*x *x *x GNW Kank *x *x
Kabuto Sasuke Kimimaro Tsunade Naruto *x
*x Jugo *x Gaara *x *x