Reminds me of other cooperative undertakings like Forbidden Island and Pandemic (the core game). To that end, I wonder if you couldn't add the occasional positive modifier into the hazard tables to add a moments reprieve or a one-time tool for the team. Having some occasional option thrown into the player resource pool might help mix up responses to each of your hazards and add some extra variety.
Thematic options that come to mind:
- Spare Parts
- Return Fire (takes an action now to reduce the number / severity of attacks in the following round?)
- A smooth patch of ground (maybe some relief to Traction systems?)
Thanks for the game