My objection to Dawkins principles is that he suggests that all theories of god should be rejected without any critical assessment.

"The God Delusion" is exactly that. A critical assessment of the "God" theory.

So if a theory of god appears tomorrow which conforms to scientific principles (I'm not saying it will - I am merely hypothesizing) then we must reject it because it refers to supernatural beings.

Dawkins says the exact opposite of this in "The God Delusion" several times, and refers not to the certainty that there is no god, but rather the unlikelihood that there is a god.

In an earlier post, you implied that you read the book, but if you did I'm not sure you paid much attention.