I agree in most cases that it's perfectly reasonable. But from a pragmatic position, I think this needs to be treated as a special case because of all the peopl

I agree in most cases that it's perfectly reasonable. But from a pragmatic position, I think this needs to be treated as a special case because of all the people that are using it. I still like the idea of having a flag that opts people in to using internal classes. It's like an agreement almost that they know what they're doing is not supported across versions.