Ah I wouldn't take it personally, I dont think anyone's doubting abilities, I think its more to do with understanding your choices. I understand your reasoning, as - I'm sure - the others do. I think the objections to using mel, was that you intend it to eventually be used by others as something to extend their own work upon.
I'm hoping that the final, final product of all this will be a way for amateurs, students, and small studios to set up pipeline tools capable of being customized down to variable names. The user only has to set up the initial conditions, and the metaPipe will take care of the rest.
My thinking is that the final product, as fantastically useful as it might be, will - in comparison - be limited and hindered.
Either way, good luck, and I'll be interested in following this project's development