I think it's helpful to post pertinent 4E rules. Most of the players have only skimmed the rules and don't understand how their powers work so it can be quite helpful to getting the most out of their character. If they like the written rules they can take the advice. If they prefer the house rules than Sark can stick with that. Either way the game is a great listen.
On a related note, I'm glad Sarah started using the Wizards character builder so the proper bonuses were being applied. There were a few times the heroes missed attack rolls by a point or two and I was mentally yelling "Don't forget about the weapon proficiency bonus!"