I tried this mod a bit, the result is really great so far. Still have issue with anti aliaising and a moderate fps impact.
On the visual aspect , it looks very good, yet it would be even better if it doesn't have always this foggy aspect. Some cloud relief , cavity, bump would be nice to see too.
Also Some lightning issues, clouds get a strange yellow color at dawn.
I don't know however if this is at the moment technicaly possible.
Please keep up the good work :)