Not really, it's rather complicated! (Which is why it isn't a node yet)

Not yet! Right now I'm too busy with preparing for GDC I'm afraid, and after that I need to do Unity 5 specific implementations in SF, among a bunch of other things. It'll take time I'm afraid

I don't think it has anything to do with the amount of objects, it's probably depending on where it's located relative to the screen. In any case, this is more of a question for the forums, try asking there :)

That's because dithering is on, look under the blending settings

It seems fine. What about it isn't working?

Cool, glad it worked out :)

What was it?

Neat, I'll see if I can make it there!

Pretty much, along with any modifications you might want to do with them. They're specifically made so that box projection and the built-in sky/probe blending will work.

Multiply RGB by the alpha channel * 8, and I think you'll get proper HDR unpacking. Though I'm not sure