Analytic Philosophers would probably agree. Below, you claim that the principle of first-classness can be made operational. But earlier on you claim, and I'm sure correctly, that the paradoxes of first-classness can't be avoided. Sounds like a tin of worms, but it isn't. This one is no exception.
Generic theory is an instance of itslef.
Generic theory being an instance of itself' would seem to be tautological, and every aspect of reality being an instance of theory would seem to be some kind of radical idealism. Or is it that you are saying something on the lines that the theory in question is just another instance of what it talks of. So we might have, for example, Wittgenstein's own work as a kind of language game describing language games, Quine's theories as being just further instances of the physical things his regimented scientific theory posits, pragmatist theories being nothing more than instances of the foundationless discourses which they speak of. Enlargement on this would be welcome.