Wednesday Boy
The Nerd WhoFell to Earth
The power is some thing that can rather easily be destroyed or taken from them.
That's a fair point. It's good to focus the campaign around the PCs instead of an object.
...and you've got trouble you really aren't ready to handle.
...but I would love that campaign because it throws you in situations that you are difficult to navigate. Some factions would be trying to take your ship by force, other factions would be acting like allies only to take your ship clandestinely, others could be manipulating you to help them, and others might be out to destroy you so no others could have you. The myriad of motivations towards the ship and approaches to achieving their goals creates a web around that PCs that I think is rich for plots. Maybe I bear a striking resemblance to Mr. Vorkosigan!