I'd like to see a shift in direction for Dragon. I don't really need fluff. I make my own, but I won't object to there being some inspiration out there. I don't really want any new crunch. There is plenty of bloat already. The flow of new crunch should be controlled.
What I want is a series of revisited articles. Maybe one or two a month. Fix some mistakes, improve some junk, reduce some taxes, etc. I know a lot of people dislike "errata" and want to play the game as published. I understand that desire, relearning is taxing, and can be confusing. But we're in the software age of D&D. CB makes many changes very simple, and seamless. If some dragon article fixed your character's hit points, next time you level up and print a character sheet, it'll all be fixed. If the way a power works is changed, it'll be right there on your character sheet.
This would be a chance to create more versatility without bloating the existing options, by promoting junk to desirable. A plethora of feats, powers, and items clutter the CB but never see light of day. Why not start making something out of those.
Some of the flavor of classes and certain mechanics can be incorporated as rules modifications. Class features can be added. Avengers, Monks, Battleminds, etc. could get a feature to use their primary stat for basic attacks. All Wizards and Invokers could be updated to respectively have Magic Missile and Sun Strike as features. A 4th level utility could be added to warlocks for a per encounter bonus to intimidate. An 8th level resurrection feature could be added to Runepriests. With Essentials they have managed to incorporate some of the flavor of classes back into the mechanics without tipping the balance of things.
Many paragon paths are seriously lacking in punch, especially Sorcerer and Barbarian ones. A minor tweak here and there to existing paragon paths to make them more desirable than multiclassing into fighter for a fighter paragon path, would be a better path than creating a bunch of new paragon paths, though I wouldn't mind some of each.
Racial stat issues could also be easily updated with Dragon articles. If there is a Wilden article and a Deva article coming out, why not use this chance to introduce their alternate stats, and maybe alternate racial powers if they have them?
There are lots they could do with Dragon content. They just aren't doing it currently. Whether I like Essentials or not, I like their bravery in the steps they are taking. I hope they can bring some of those sweeping changes in with Dragon magazine content too.