I'm sure there's some precedent, but I think in this case It's probably up to interpretation.
So, what sort of campaign rules would you set forth? If you want ideas for how most campaigns here are set up, just check a few threads out.
A few things to think about, for all of us:
HP: Average or Rolled?
Sources: Is it Homebrew only, or just all homebrew classes with options to mix published feats/etc with homebrew ones?
Traits/Flaws?
House rules?
Starting level? Starting GP?
etc. etc.