crazy_cat said:
I think WOTC need to focus on a few campaign settings and support them well - I'd recommend Forgotten Realms and Eberron (even though I personally don't like it) for this treatment.
I think the opposite.

I think WOTC should put out several settings over the years, and do only the main campaign book and 1-3 supplements total for each.
I voted for:
Forgotten Realms - It's not my favorite setting, but I play in a longstanding FR game, and the realms have lots of interesting things in it which can be ported to other settings.
Eberron
Oriental Adventures - I don't especially care about Kara Tur, but I want an OA book, and Kara Tur is a good implied setting.
Birthright - My favorite D&D fantasy setting. I don't expect it to be republished, but a man can hope, right?
Dragonlance - Just a single sourcebook detailing the various mechanical bits (wizards of high sorcery, the knightly orders, draconians, etc), plus an overview of the setting and DM advice.
Planescape - I want planescape! Don't make it a "meta-setting" to shoehorn other settings into, focus on its biggest strength, cool planar adventuring.
I'd also really like Birthright and Taladas, but I don't expect it to happen.