no it isn't... for the last 5 years my group has tested at least 4 whole different house rules to get to work and they have not worked as wanted.That's homebrew. And a flavorful homebrew is extremely easy to do
homebrew is easy if you don't care if it works as intended or not. If you want it to work and be balanced it's hard.
there is a reason no one is paying me to write rules.