154 entries with 456 stat blocks. Enough text to give me an idea about the monster, but not 7 pages dedicated to kobolds (I'm looking at you, 13th Age Beastiary). Every monster is in the index. Monsters by CR isn't there, but it's going to be in the DMG... I'm actually fine with that. They already had to add pages to the binding. If they included it, as soon as the DMG was out there would be complaints about recycling content in one book or the other.
Is "needing my DMG & MM" to plan encounters really a legitimate complaint to make? I mean... who doesn't have their PHB, DMG, and MM in their bag at all times?
Anyway, I love the 5E MM. It's my favorite D&D MM of all, and possibly for any RPG to date. I really liked the 13th Age Beastiary, but after reading the 5E MM I realized that less is more in an MM. (52 entries & 202 stat blocks in that book, by the way, most of which are just different tiers of those 52 entries, since there's no bounded accuracy.)