I was skimming through Spheres of Power yesterday (I still haven't read it thoroughly yet), and a thought for a campaign world came up: What if everyone in the world had Spheres of Power-style magic? And I mean every sapient being has at least a little bit of magic, and other styles of magic/spellcasting aren't available.
Would one be able to make pretty much general PC character type with just the eleven base classes in the book?
I'm a bit concerned about skill-heavy characters, or if concepts like "raging" or "nature warrior" are covered, or even if they are necessary. But, like I said, I've only skimmed the book. Maybe all the needed stuff is there. It might even be covered in the "Using This Book" section. [I do know about the conversion archetypes, but I'd prefer to avoid those, if possible.]
I'd probably want to make an NPC class (or three—commoner, expert, adept). Other than that, what might be needed? What might be useful? I'm sure some of you are far more familiar with Spheres of Power than I am.
If there seems to be enough interest, I might do some sort of play-by-post here using the idea.