PFBB as a complete "P5" system, with 20 levels?

[Pathfinder Way]

Has anyone written about using the PFBB as a complete RPG?

I mean, using it as a complete "P5" RPG (like the "E6" game where D&D is capped at level 6.)

And then extending that with a simplified system for a higher level play (levels 6 to 20+), consisting of a regular feat progression instead of class abilities, and with simplified spell-lists?

[Garrett Guillotte]

Not exactly. There P6, but it's not based on the Beginner Box.

EdOWar writes a lot about using the BB as a full system, and I've used his class and system conversions pretty extensively when running non-BB content. But there's nothing there for running content past the BB level cap.