Arkhandus raises what I consider to be a legitimate point above (which he has since edited out, but was quoted by someone else). Namely that Initiative can decide the entire battle. Since about 12 months after the release of 3.0E our groups have been using the optional rule to restrict creatures to a standard action in the opening round (similar to a surprise round). This means you either attack or move, but not both (unless you are game enough for a partial charge). We find that probably the best optional/house rule we've implemented (along with house rules on Tumble and Concentration checks no longer automatically allow you to avoid AOOs).
