DaerogTheDhampir wrote...
Anyway, I'm sure other things can be pointed out, but my question is why
does every single Warden need the taint if it is such a limited and
precious resource that is desperately needed for Blights? Even right
after a Blight, new wardens are brought in, and while it does give
resistance, not all who fight the darkspawn need to be tainted.
They don't
need to be, but it's certainly helpful. We don't really get to see the effects of the taint on an ordinary fighting force in either game, but my belief is that it would not be pretty. Given the amount of blood being spilt at close quarters...well, I wouldn't want to put a number on it, but the loss of troops from the taint could really devastate a military, even if they won the battle.
By making every single Warden undergo the Joining, you maximize their usefullness. For the next couple of decades at least, which is probably more time than they would have if they had not been tainted and were fighting Darkspawn on a semi-routine basis. The benefits of tainting them definitely outweigh the costs, from that perspective. Consider Duncan, a veteran of the Order, dying because he got tainted. All that experience and talent would be lost, and not be easy to replace.
Now, as to the question of the Grey Wardens being manipulated themselves...that is an interesting notion. Their tainted blood gives them a link with the Darkspawn and the Old Gods, not to mention whatever Corypheus was (let's say "Magister", for the sake of argument). We also know the Joining looks to be effectively a blood magic ritual.
We know blood magic's most fearsome property, apart from making people's veins boil and pop while still inside them, is mind control. And we know all the Wardens are linked in some way not just with the Darkspawn, but with sufficiently strong Darkspawn in particular. Every Warden suffers the nightmares of the Archdemon when a Blight starts. Corypheus exerts a strong influence over Janeka and Anders. Could this influence also cover mental manipulation? It certainly seemed to, in the case of Janeka, though that is a questionable interpretation, I will admit.
Then there is lyrium, which is also used in the Joining. We know the Archdemon "sings" to the Darkspawn, as does Corypheus, but Justice reported hearing singing from the lyrium ring. Bartrand also claimed the red lyrium idol sang to him...with a severe toll on his own mental well-being (and the physical well-being of anyone too close to him). Anders says, when examining Bartrand, that had he not been a dwarf, he would have suspected that his mind had been poisoned by an extremely powerful demon.
We still don't know the full story regarding that, but it has some interesting implications. Does usage of lyrium, or certain kinds of lyrium, make one more receptive to this "singing"? Is the singing Bartrand and Justice heard the same? Is the singing that Bartrand and Justice hear the song of the Archdemon? Has the primeval lyrium being treated in a certain way to bring about this trait, or is it inherent in the primeval lyrium, or a potential for all lyrium? And what of Templars, who heavily use lyrium themselves?
We also know from DA2 that the Grey Wardens had originally intended to breach the Primeval Thaig. Did they know what they would find there? That the First Warden sent Nathan to investigate the Thaig suggests it is of a very high priority to the Order, but their motives and knowledge of the place is, as of yet, unknown.
The above is, admittedly, a whole lot of speculation and linking together of things which don't as of yet make sense or have adequate explanations. We do know the Darkspawn, while not the main focus of DA:I, will be present in the game, so I am hoping that also means the Grey Wardens will also be present. It'd be nice to at least get some answers about what was so important in 9:34 that a Qunari takeover of Kirkwall was a secondary concern to the Order, or the identity of the "allies" Nathan speaks so cryptically about.