There's nothing so unpleasant when you're role-playing than rules lawyers hijacking the game, flipping through obscure books to make their points, and generally holding up the action while they indulge in their mastery of rules minutiae. But what if rules lawyering was actually PART of the game?
Now, I think Monopoly is just about the most boring game ever made, and every time I've been forced to play, I've always bent the rules to make it more interesting. Usually, it means merging my holdings with another player's, or making land deals where I build hotels on another player's property and we share the profits. I don't think that's cheating, but I've been called on it. Hey, throw me out of the game, that's what I really want. But I bet I could make the game much more interesting if I were allowed to lawyer it, turn the railroads into shortcuts across the board, make the car faster than the horse, etc. Same with Risk, where I always use the army colors to justify some grand SF/fantasy battle between zombies (gray), Martians (green) and Atlanteans (blue). Now what if house rules allowed them to be more like those specific races? Zombies could turn enemies into themselves, Martians could disembark from space (at least, until they're exposed to the common cold) and Atlanteans could own oceans. The more players, the more house rules, let's go crazy. R&D gets us off those Napoleonic cannons? Bomb the hell out of those bridges? A Cold War turn with stockpiling and secret agents?
And of course, this can be taken into a tabletop role-playing game, though I wouldn't recommend inserting it into a long-term campaign! But as an experiment, play some one-off and allow the players to inject house rules as they see fit, argue their points, keeping them brief, graft ideas from old Dragon magazines, whatever. Or alternately, find some reason (divine intervention or imps from the 5th Dimension are always good) to allow your players to do this for a single session of your long-running campaign. Maybe the real rules lawyers will have an epiphany, or find a more efficient way of expending their rules wisdom, or maybe you'll end up creating monsters, who knows? It's an experiment. I didn't say *I* was going to conduct it.