I think I like this one the best too, don't know about the 1% of ships surviving tho, may be a bit too low.
Every thing is adjustable.
sid6.7 was wanting a way to disrupt the normal day to day workings of an entire empire. Trade and supply is the best way. Not knowing what caused it also leads to trouble as people will panic and blame everything and everyone.
1% is just around about figure. Since no one knew it was coming and traffic was going on as normal, who knows to tell others. (reason I suggested that PSI races had a greater survival rate of ships)
Even after a normal jump a ship does not always come out exactly in a week. People wait and the that could be 3 days before they decide the ship is lost, mean while ships are still jumping at over 100 dia and less than 1000 dia and so are having a great deal of misjumps occuring.
Lets say that a ship avoids the misjump and arrives a week later. Would they know that the jump parameters have changed? If the system does not alert anyone (if any one even knows) about the danger what happens then. They jump again and misjump potential happens again.
Of course the 1% could be higher at certain systems. Say a repair depot where it takes weeks, months to repair a ship. Or a ship yard that is still building a ship (takes months, years). Or any other system you wish since it is your world/game.
Then when does the system discover the jump danger window is 1000 dia instead of 100 dia? Trial and error, a ship that actually makes it in system that already knows, PSI, or ???
The part that I like about this type of turbulence is tech is still high but supplies, exchange of ideas, and (interstellar) trade have gone away. Some planets will be in desperate need in a short time. The Empire can not come to the rescue. Some will have plenty of supplies but no tech replacement. Some will lose its ecomony but have more than enough supplies to live (or create their own supplies).
Above all, the panic will be the greatest threat to the stability of any government. Just think of today's world and try to assume what would happen if all fuel engines just stopped working? You could still walk and pull a cart carry a backpack. Maybe you have horses and a wagon. Maybe you have an all electric vehicle that still works for some odd reason but you don't have the electricity to charge it up (unless you are set up gridless). No fuel generators work, etc.
How much would people panic? What time of year for that region (world) is it? Is harvest ready or is it winter? Can they even grow food (cities or extreme climates)? What happens to the response time to emergencies if they can not drive to it?
Of course that is not exactly what happens in Ping but close.
Please feel free to modify any part of the idea/thoughts that I have presented to fit what every world/game/story you like. It was only created by discussion between people who like to dream.
And thank you all for your input to sid6.7 request. It has been and will be fun to think and discuss.
Dave Chase