There's a phrase in writing that refers to the editing process and I believe it goes like this: "Kill your darlings". That is a quote from Stephan King and while I doubt that Mr King was thinking in rules terms I know a bit of what he means. You can look up the whole quote if you like but those three words have been a bit of mantra when building the rules.
Time and time again through discussion after discussion each part of the rules has been put through the wringer with the same question every time; "Does keeping (this) or removing it make the game better?".
It's a tricky question because better is subjective. Luckily I wear some different hats and so I have some competing lenses that I view the rules from.
Submitted by Dave McLeod on Fri, 07/04/2014 - 12:18pm