I can see some use of this sheet for when I am "winging things", but more likely is that I would use it when I craft adventures. I tend to look at XP cost for monsters by level (minion cost is useful) and the budget for the party of 5. I look at the list of skills when designing skill challenges. Major/minor quest rewards are used at times. Running a game I like the list of knowledge skills for different creature types.
Reference-wise, it would be awesome to have a list of material that provides traps, terrain, monster themes, and templates. A mention to the article in DDI with all the rituals would be useful.
Thinking out loud...