As I'm presently stressed out, and slightly exasperated by the possibilities of getting a gaming group to schedule a session, I'm dreaming up new cool projects.
I used to think that the first edition of that wild and crazy game Mage had something. The setting was black and white to a fault, and the usual "class system" really created game groups where everyone was an oddball and nothing but metagaming would ever keep that group together.
But, the idea of magic as something as the whole basis of ontology and conscience was mindbogglingly cool. Suddenly everything was magic, and you could totally explore the modern world from that perspective. Except you were supposed to play conservative/reactionary people stuck in a superstitious world view. At least that was how it felt, when it painted the technomancers as the bad guys.
Now I picked up the big time about the Technocracy, and started to read it as if we would start playing those guys instead. I began to see interesting option. But, I was vary of the rules.
So, how about using BRP instead? You could just grab the standard Call of Cthulhu skill list and just add the spheres of magic, couldn't you? Imagine you have skill ratings in the spheres just like any other BRP skill. Then maybe you'll have another skill for actual spell casting and if you wanted to do something you'd allocate percentiles up until you reach your rating in that sphere, and if you want to do something more powerful you'll get Paradox. I have long been thinking it would be cool with a system where you would "bet" your chance of success against your character's limitations, and that would be an interesting way to make that happen.
I will probably never do anything with it, but suddenly I have some weird system hackery to occupy my mind with. Maybe I'll even feel tempted to toss some words into an search engine to find out if someone beat me to it. Maybe. It is more fun to just dream up systems, right?