I don't really think there's such a thing as a perfect set of rules. I went through a ton of RPG's rules and saw what sort of things they covered (godmodding, mary sues, spelling, etc.) before setting up the <a href="http://asylums.insanejournal.com/rp_tutorials/14806.html>rules template</a> here.
What turns me off a game is more the <i>tune</i> people take in rules and expecting players to do way too much (i.e. write a 5k entry explaining your character's wedding should such a thing occur!). No one wants to be treated like a three year old and so many rules go at it from that stance. You know what I'm talking about: I AM MOD AND MY WORD IS GOD YOU ARE JUST PLAYERS UNDER ME. MWAHAHHAHAHAAAAAA. Below I'll paste a rules page I was working and planned to post later or I'll do it in another entry. Hopefully it'll come in handy. :D