If Bryce can batch render I've missed that. I've never found a way to get Bryce to render without running in full screen mode. Curvature is simple: bring up Bryce, turn haze off, put in some cumulus clouds. Note the way they go all the way to infinity getting smaller and smaller unless you have haze on? You can stand in Saskatchewan and you won't see that, because the horizon is about 4 miles away. In Bryce the horizon is at infinity, which looks very unrealistic. Vue has been able to model the curvature of the earth since v2 - why not Bryce?