Instead of Leviathan asteroid rings instantly timing out, have them dissipate over the course of 12-24 hours(or even longer). This would achieve two things.

1) The sudden magical disappearance of the roids would not happen.
It is kind of jarring that they just go poof. You hop one sector over and jump back, and they are gone.

2) Miners would have a chance to mine the roids, and leave the sector and come back to mine more ore.
In the future, maybe randomize the content of the roids a bit as well.

The dissipation effect would (in my mind) be like they slowly go off in different directions until they are no long visible on radar.

+1

+1

Random ores would be great
+1

It should last at least as long as it takes for the mission to refresh... something it used to do. But dissipating roids? That seems unnecessary.

There is an active demand for "empty" sectors to run mission stages, so we try to clear out sectors with dynamic content that are "over", so we can regain these sectors. A mission intended to be in an "empty" sector, getting stuck with a Leviathan ring, can be problematic to intended functionality.

Anyway, noted, but not likely a priority in the near future.