That could work, but it's a bit too centered around a few organized faiths for my taste. It's like that Rax thing that was bounced around in here earlier, it's cool but too geared toward a left-right political perspective for my tastes too. But this being fiction, and created by flawed human beings with our limited perspective, we're all going to bring different things to the table based of our own experiences and beliefs. This is especially true for a game based off the themes Mage is built around. Then you factor what you want to get out of it, and some people want a more Urban Fantasy feel while others would prefer something more realistic or taking the themes of the game to even greater extremes. I'd rather approach world building and potential reforms to Mage around the spirit of presenting and building up each other's ideas than endlessly arguing about what would be more "realistic".
Like if I was going to rebuild just the Traditions, I'd probably have any organized cooperative effort come about much later. As the Technocracy advanced, they took on Awakened rivals, pushing surviving groups together in greater and greater alliances. Maybe there was a prophecy about a "Council of 9", and at some point these 9 surviving groups did come together to finally fight back in an organized manner. I see it as something more between what the cannon Traditions are and the Disparate Alliance. In this way you could come up with some interesting crazy mixtures of mythic traditions that had things in common and formed together because of survival, but also having them reflect history and real world beliefs more. It would also be something that doesn't feel like a pointless faction that failed to accomplish anything for 500+ years.
That's my two cents, and more what I'd like to see at the moment. However I'm sure there's at least one person reading this thinking it's the most awful fucking suggestion ever.