There is no reason to think Moore would just creat Galactia 2.0. I think he is creative enough that he would bring something new to any show he creates and maybe only take elements of Trek he feels is important and maybe a few things from Galactica he liked. Such as having older Actors as your main lead or religion being a important element. I think a attention to everyday details of life would also maybe be something from Galactia that carried over.
Jason
I think he hardly wants to go back to the restraints that the producers of Star Trek put upon their creative team, after the freedom he had on BSG. He did a magnificant job on, BSG, I hardly doubt that will ever have the free reign to handle the themes that seem relevant to him - military personal at war, religion, terror, interpersonal dynamics - in Trek. Also, and this is just a personal preference, but I really could do for a sci-fi without heavy religious overtones for a while.