A small one: "Expulsion from Stack Overflow" in the table, should probably say something along the lines of "Expulsion from the Stack Exchange in question", since with over 90 beta sites now, there are some people that don't know what Stack Overflow is! If what was meant by "Expulsion from Stack Overflow" was actually the much harsher statement of "Expulsion from the Stack Exchange Network", then it should say so.
Since this is a code of conduct, I would recommend that it is made written somewhere, perhaps even in an appendix, what exactly would allow for "Expulsion from the Stack Exchange Network" to be enforced, just like referees are given specific circumstances in which they are to issue red cards, and judges are bound to specific laws regarding what sentences they can issue. This will ensure that no one is permanently expelled in error.