It's hilarious in Flood where it's much more powerful. Camp yourself near a ramp or two properly, watch people launch themselves with Thrust into the ramp and off of the map over and over again. Just like Evade used to do in Reach's Infection.
That said, if you do know what you're doing in Flood, you can use the aerial Thrust + ramps to launch like crazy and break almost any group defense using yourself as a living guided missile XD
PSN: VectorChaos || WTF || XBL: Vector Chaos I'm the best there is, plain and simple, I mean I wake up in the mornin' and I piss excellence.