Poly includes some D&D material (including the LGJ). I'm confused by people complaining about the the Poly section with the inclusion of an adventure set in Greyhawk. Darn those sneaky people, putting things like that into Dungeon!
So the mags changed a little bit, from time to time that happens. The big fat two monther was really cool and an excellent deal, but now we get it more regularly and smaller magazines will proabably be more manageable.
The mini-games have had some stellar moments (Tweet's gama world, the delta green game) and some flops (another WWII game?). I don't seem them continuing for much longer, especially as WotC and everybody-and-there-dog starts producing Modern settings.
Honestly the two adventures I'm more familiar with have had some serious editing issues (Beyond the Light of Reason and Life's Bazaar). A lower page count should translate into cleaner adventures. I'll loose a few pages, overall, for that.