Blights are part of the world, but that's not nearly all there is to them. It's also not what I'm interested in the most.
The hero of Ferelden's story might very well have ended. It's not up to me or you-- BioWare decides this, and saying the Warden has not accomplished anything else of note, or explaining whatever else there is to him/her in a way that doesn't involve them directly, is very much valid. There is no need whatsoever for a veteran in order to include another Blight in a Dragon Age game.
The Wardens have the reputation they deserve. They should be disbanded and replaced by another organisation with the same purpose and entirely different methods and customs, as far as I'm concerned.
The hero isn't even from the same group of wardens as the ones corypheus used, nevermind weissept and the wardens in the free marches, tavinter, etc.
Anyway, telling us the warden is on a quest to stop the calling and find the soruce of the darkspawn is the ultimate tease. it's a story that deserves to be told. One of many.
Reasons they can aren't the same as reasons they will. Bioware has said they're basically done with the Warden. Accept that.
They said that when it was nearly impossible to bring the warden back, thanks to the keep and the system like the custom hawke system, they can now import across platform. Maybe they won't, but I sure as hell hope they do, because stories like morrigan's mean a lot less if it's a new protagonist every game, or worse, if they're never finished.
And if you look at the comments, I'm not alone in wanting to see the warden again. And most of the guys who don't, are guys who worry bioware will screw it up, which doesn't have to be the case.