I'm not sure if this has been discussed before, but this thought came into my head as to how difficult it is to set a trap for someone unless you log-off in space near a mining field and just log back in when you see someone in the system, or just generally hope to catch them off-guard or not paying attention to the radar.
So, I was wondering, would it be possible to have a "powered-down" mode for ships that would make them not show up on radar, but also not let them use any other controls (like engines, guns, shields, etc.) until they power-up?
This would add a nice benefit for aliens, pirates, police, or even military units who want to catch their enemies at unawares. Or even for folks trying to escape from a pursuer.