Going out on a limb here with something that may be unpopular.
They have said that monsters have been redesigned to fill "roles" on the battlefield, so each critter has an overall "feel" to it that defines what role it plays. For example, an orc is an up front combatant, while the mind flayer is a behind the scenes manipulator.
Taking the "monster role" idea one step further...
Leave all the Good aligned monsters out of the Monster Manual.
Seriously. The "role" of good aligned critters in most campaigns is sponsor, ally, friend, or something to be rescued. Do you need stats for that? Not really. From a game mechanic standpoint, does it matter if the individual sending the PCs on their adventure is a wealthy noble, a high level wizard, a gold dragon, an astral deva, or a couatl? They can show up in the 4e Monster Manual II, or in the equivalent of the BoVD as adversaries for evil PCs.