Okay, just so we don't end up going in circles, let me ask a few direct questions so I might be able to wrap my head around it:
1) How are you defining "morals"
For the sake of this thread, morals = the golden rule.
2) What should a moral system entail? Is it a matter of just right or wrong?
Carrying over from point 1, the golden rule encompasses every aspect of moral obligation and decision making when faced with any situation. To expand just a little bit, if I treat others the way I want to be treated, I would first need to be sure how I wanted to be treated was universal in nature, that could apply to everyone. Which is, I don't want to be killed, stolen from, lied too, cheated on, etc... This is the basis of morals, and at the same time it is what makes up the golden rule.
3) For those who aren't "normal" and thus not subject to the Golden Rule...Where do they fit into the system?
These people are still part of the system, but as we see today, they are often removed from society, because they hurt people (some of them do), others that aren't violent, but just mentally challenged, like my son, well, I plan on taking care of him for the rest of my life, because his brain can not grasp certain social functions. If we need to talk about this further, or I am not clear enough, let me know.
4) Haven't you already identified yourself where the Golden Rule is inapplicable (rapists, masochists, etc.) ?
Actually I said it is applicable. It is applicable from both sides. The rapists, it is applicable still because if the rapists had a normal brain, he would see what he is doing is wrong. In other words, the sky looks blue to most people. If a color blind person can't see that, it doesn't make the color any less real to everyone else. So to, does the golden rule exist and apply, even when those can't understand it.
5) Is the system internal, external, or both?
It is definitely both. We can internalize it for our own lives, and also apply externally.
I would just ask that you reflect on the golden rule, and then reflect on what morals are to you. Tare it apart and see if it still stands. To be sure, though, if you don't agree with me on what morals are in point 2, none of this will make sense.