Pretty sure there was a reply in another thread about this where it was answered, but just in case not - the Gamma operator in its previous form was added purely to overcome a technical issue with color management in Max, which is no longer relevant so it has been removed. In terms of having it as an artistic parameter, we'll look into how that might fit in with tone mapping in a way that makes sense there, e.g. similar to how you find adjustments in Photoshop, which may be something different than the parameter that was there before (stuff like Offset etc. too). So we'll look into re-adding it, at the same time we look into other VFB 2 things that we may be changing (which may not be 12, as the work there will focus first on the recode and reskin and then we'll see how far we get otherwise).