darjr
I crit!
One thing I'd like to point out is that DDI does not include everything in the books. All of the powers, Paragon Paths, and feat options, yes. But when I made my Invoker in the Character Builder I had to go back to my PHB2 to find out what the "Summoning" keyword meant for my Angel of Fire ability. Nothing (that I can see) in DDI tells me what a Summoned creature's defenses are, or what their hit points are, etc.
The same can be said for Familiars here in Arcane Power or for some keywords in the other books. Unless I'm missing something obvious, those rules are in the splatbooks and nowhere else.
More of that stuff is going into the compendium. Not everything, and the rules stuff will be 'summaries'.
http://www.enworld.org/forum/general-rpg-discussion/255157-character-builder-compendium-update.html