I gave the thrusters a good try, the new upgrades were pretty awesome, upgrading it up to three times makes it nice and even to try different levels of power. The most powerful one however, no matter how well secured it is, always breaks the foundation its on. Might need to nerf the last one a bit, or maybe make it larger, trial and error I suppose.

I reduced the amount of thrust by 33% and increased the thrust duration. Still, i recommend to put the thruster on a long piece of bracing which is properly secured ;)

I use the thrusters in my Lead Zeppelins map and they are awesome. I concur with Mirtar1. when upgrading to the top power, it always breaks away even when well supported. if there is a way to reduce its vibration when being used that would be great