It has occurred to me that it might be useful to have a document summarizing the most common technical problems encountered in drafts that have passed WG last call. These are things that if present in a draft tend to be "red flags" -- items that are often of questionable technical merit, and will tend to draw scrutiny. That doesn't mean that such items can never be included -- just that the WG should be prepared to make a persuasive argument for them. It might make sense to group the "red flags" by Area -- Transport, Security, Routing, etc. so that we can make sure to have come up with a "well rounded" set of issues. Do people think that such a document would be valuable? How many "red flags" might be reasonable to discuss in such a document? 10? 25?