I sometimes see some of the ever problematic game recommendation questions having very specific requirements. And sometimes, I don't see a game I know answering those requirements, but I see how hacking a game I know could work.
An example is this questionthis question, where Fate hacks or Burning Wheel/Mouse Guard hacks have been mentioned.
This brings several questions:
Would a game hack be an appropriate answer to an game recommendation question? How detailed would it need to be? And finally, is personal experience with this hack necessary, or is personal experience with the original system enough?