Not much to say other than it looks cool. Minefields and gas pockets and the like are long overdue for being made properly lethal again.
But the Kepler part of the post made me wonder. It is a transit system, and probably sees more trade traffic than Galileo by a significant margin. Does the instakill zone extend over literally the entire system (sans corridors for lanes and gates, of course), or is it more of a thing for locations away from the infrastructure? If the former, do pirates have easy pathways to reach the lanes from Nome and the Galileo JH?