If you think the universe was created, then you have an obvious answer, that they are basic principles according to which the universe was created.

You're doing the exact thing I was talking about earlier... "abstract concept exists, therefore God exists". Everyone knows the universe was created with certain rules. Nobody knows where those rules come from. Assuming "a creator" doesn't answer those questions in any useful way, especially when that creator has no properties. Where, then, is the advantage of this system?

And while the negative theology view doesn't prove that miracles or revelation do happen, they are at least possible under a negative theology view.

Only if you grant that god a huge number of critical properties. Anyone who wants to proclaim a miracle-granting god still has that immense burden of proof.