I'd nominate you..
Actually I don't mind that sort of thing, I used to the the tech pubs for a company I worked for in a previous life.
Seems like ArduinoInc could trust a couple of common sense people.
Yes we've mentioned that before as well I seem to recall, and if we can't find anyone with common sense then maybe some of the regulars.
I would think that a few people should be given the rights to make small changes, maybe with a peer review. Same for all the docs, I'm sure this is going to get out of hand with the new boards.
I don't really know how the playground etc work, I suppose any changes there would have to be run past the original author.