Yeah, but 3e FR got a bit textbooky trying to work in everything. It's fine if you are already a FR fan, but 13-14 setting/splat books on FR (let's face it - Drow of the Underdark was practically FR) gets more than a little intimidating if you are a n00b. Oddly enough, even though there is more stuff for 2e, the way it is presented is more friendly to new players - more modular and less mapped
In some ways, I'd prefer that Wizards do what they did with Drow of the Underdark to a sizable chunk of the setting, and use that as the Default 5e. There's a lot of good stuff in the setting that shouldn't just be locked up in the setting, but rather be part of D&D as a whole. Champions of Valor/Ruin were better books than Exalted Deeds/Vile Darkness. Serpent Kingdoms could easily be a stand-alone book like Drow of the Underdark. Maztica, Zakara, and Kara-Tur could easily be branched off as their own settings (much like Neverwinter was).
I guess I would like to see the modularity of 2e with the production quality of 3e and the not-textbookishness of 4e.