Defined rules mean nothing if they are subject to interpretation. Trust me, the moment you leave an out for the things you're ostensibly making rules against, your job as a moderator becomes just as time consuming as before. You'll still have to rule, still have to decide, still have to put your foot down and still have to police your own community.
Case in point, on another board, we went for probably 5 years having some of the most acrimonious political debates. Locked threads, muted users, bans, heavy moderation, all that stupid shiz. Finally, the moderation staff just said "No more fucking political debates. Period."
Two years of peace, quiet and pure nerd posting resulted from that. Eventually, people tacidly began making political threads again....but the attitude of the board had changed over those two years. No one wanted to go back to the days of veiled or outright insults. No one had the stomach for it anymore.
Rules are only worth something if they are consistently enforced. For a board this size, consistent enforcement means a moderator checking in here, every day, to curb all the stupid crap that annoys people. "You have 1 more tilde than board rules allow in a thread title." "You have posted three times back to back." "You have posted three threads today." Blah blah blah. I like an ordered house, but not when it eats into the time of the guys making a game I want them to work on.
If Toady delegated moderation authority around, it wouldn't be so much of an issue for me. But for a two man show, they don't need a 20 entry list of rules for forum etiquette. Not unless they're going to devote the time to enforcing it. Which would be pretty absurd given how "srs" the discussion around here is.