Depends... what are you calling an "average" system?
I doubt I could run even a training mission at 32km at 1fps, and as a general rule I don't make mods that I can't use (unless it takes 20 seconds like this one did).
In the past I've had real difficulties with the SH3 sky dome model. It's just plain twitchy AFAIC, and since it would need to be modified to extend the atmosphere past 16km... well you can see how making such a mod would quickly turn into a big development and testing headache for me. Prolly a job for someone else I'm afraid.
