There’s lots of ways to get around character death. Resurrection is available, if sometimes expensive, and you can cut deals with the Reaper on your Last Breath roll. But what if you couldn’t come back?
When you declare that you are going Hardcore, X happens until you meet Y condition. However, until Y condition is met, if you die, you are dead permanently. No Last breath, no resurrection. Dead. Forever.
What would be your X benefit and Y condition?