I'm considering building my own RPG, the setting is already underway I just need a system. For sake of expediency, recognizability and legality I'd like to use an existing system as the base.
The only open game license that I know of is for the D20 System, and it's the rule set that I "get" the best.
The D20 System is "crunchy", mechanically speaking it has a lot of moving parts. For ease of building and eventual play, I'd want a version of D20 that had as few moving parts as possible without it becoming a rule-lite and or Narrativist game like Fate or Powered By the Apocalypse.
So I'm asking did Wizard of the Coast ever release a streamlined/simplified version of the D20 system, and if the answer is yes was this system released under the OGL?