For me, it's not necessarily the page count in and of itself. But I could have sworn that when the 'previews' started that they were not supposed to take the space of regular articles.
And then there are 'articles' that are MORE preview material.
And the actual articles themselves, some of them are quite good. The Kord one recently for example. I'd pay to see more of that.
But without cartons, ads, three adventurers a month in dungeon that aren't just crammed with combat, three adventurers a month in dungeon that vary a little into the higher level, since, you know, it's supposed to be core now, etc...
Well, let's look at it this way. Pathfinder has been kicking ass and taking names and trying out new things and still coming out on time and still doing whole adventure paths and supporting them whole heartedly.
Scales of War has been over for a while now and the Caves of Chaos have focused so much on the lower levels, that i'l lbe honest, I don't even see what they're doing with it nowadays.
Here's the other part of it. Without the DDI updates for Essentials, those dragon articles, etc... that provide new powers/abilities to essential characters? What am I going to do, half on paper and half DDI? Come on man. That's possible but I'm the one or theo ther style.