I take no credit for this except for uploading it on my webspace. They were compiled by Cwylric (D. Jon Mattson), with the input of Evan Jones, one of the game's designers. I got it off these boards years ago, and the original topic has been long since pruned, it seems.
Collected here are some of Cwylric's House Rules, including modifications to existing Actions and Modifiers, some clarifications, and some new Actions/Modifiers (including Energy Battery, Rapid Recovery, Leaping, and the Efficient advantage).
Hmm... Wheres all the other house rules? Like Immovability? Unstoppable? Prescience? Albative Force Field? Those are some of the best ones ive seen on the board (thanks to Pirate Spice ).
Three years ago, this guy Cwylric had some cool house rules that he devised after talking with one of the game's creators, and this file is what resulted. A collection of stuff off these boards hasn't been done yet, as far as I know. But hey, if anybody wants to do that, go right ahead.