[PsychoTechFreak]

Do you know what ? I have found an interim solution:

-set up a game with cheat codes allowed
-quick research shields until system grav. shield facility, with the "money" cheat
-quick research stellar manipulation until gravitational condensor
-close all warp points to your home system(s)
-build a system grav. shield
-Under Empire Options: turn off "show log at start of turn", and turn off "display confirmation dialog when ending turn"

And then put your coffee mug onto your F12 key...

Next morning: Release F12.

But an additional savegame with increasing indices every 10 or 20 turns would be nice (idea of Rollo, we had a short discussion about this).