"I'm still mulling that one over. I took it out because it's very confusing to people about when to use mapping or when to use a local transform in the material-- and how the two interact. I can put a rotation back in pretty…"
"I forgot to mention window glass properties that will negatively impact performance--
Not using the Thin checkbox and modeling glass
Using a bump map of any kind
Using surface roughness
It's fine to do all of the above when you need to. …"
I can certainly add passes as a constraint. I did this to keep it consistent with the cloud stuff, where I won't be adding passes since everyone is billed by time. Passes, BTW, are called Samples per Pixel in the Image…"