I've had an interesting game recently.
A while back, while discussing the most useless units in 40k, I mentioned on another site that it was too bad Hellions suck so hard, since their models are so great, and I have so many sitting around.
And someone said: "Why don't you use them as Corsairs with jetpacks?"
So I ran a test game to see how a prospective Corsairs list would play out.
Here's the list I threw out:
It went GREAT! The Relay Pipe plan went off flipping perfectly. The Flamer squads would hop out, hose down an enemy with their Torrent flamers, (making sure they were just barely inside 12" so they could get the Reckless Abandon move) and then hightail it back to cover and away from retaliation.
My opponent was Blood Angels, and with every unit on the table able to move 2-3 times per turn, I was able to keep all of his units running in circles the entire game.
The Corsair Venoms kicked major butt, as did the Reavers.
The Malevolents were a let down. They didn't have much in the way of combat oomph, although they did do a good job of drawing the enemy's fire. I may try them one more time, but if they're disappointing a second time around I'm going to try to find a unit to replace them.
I don't think I'll be able to win major events with this, but I can definitely see it working in a casual-competitive setting.