I run a unit of six stealth suits. (I love the assault3 burst cannon)
you can see them here (http://www.librarium-online.com/foru...althsuits.html)

I normally infiltrate them or have them deep strike in when needed. Like if my pathfinders were in trouble: my opponents don't normally like to ignore the new unit that can pump out 18 shots and jump around. (That may just be the people I've played against)
I have them sometimes run from cover to cover to make my enemy chase them. I like herding the enemies units into LoS of my fire warriors and battlesuits.

Anyone have any good suggestions for more tactics?