Ruthlessness doesn't necessarily mean killing children, and heroic doesn't exclude ruthlessness.
I feel I'm repeating myself. I simply don't see my arguments countered. The story of GWs in DAI is exclusively black, with no shades of grey or white. It is a very dark picture, nothing to lighten up the tone. There is more to the Wardens than this. They are not an evil faction. Their writing is partially inspired by ASOIAF's Night's Watch, and just as them, Wardens did a fair share of crazy, but also had very honorable individuals in their history. Not to forget, they ended five blights. I miss that honorable, respectable aspect of Wardens in DAI. Yeah, we have a Stroud to show for GW honor, great. Him, and no one else. Whatever you claim, in DAO we got a lighter story, so to say, much more grey Warden story. And please stop spouting nonsense about their non-involvement. You really think that putting my (our) Hero on the Warden's path was "particularly" nothing? DAO was a Grey Warden story. It's expansion was a Grey Warden story. HoF is now a part of Grey Warden history. You can't deny this.
I hope that the story of Weisshaupt (when it comes) will be less on the dark side. And more on the gryphon side 
Ummmm... Pretty sure that thy Warden had the option to kill children in Origins. Don't you remember Connor? What about all of the slaughtered children if you side with the Templars, and help preform the Right of Anullment? So there's no way that you are going to say that only the DAI Wardens were baby killers.
Also, how did the Grey Warden order (emphasis on Order) play any part in the defeat of the Fifth Blight? Other than the obvious slaughter that gives the HoF a reason to fight, they were completely absent. The Warden goes completely against the code of the Order, and dabbles in everything that they're not supposed to.
Trust me, I drew the connection to the Grey Wardens and the Knights Watch very early on. (Great books by the way.) But, they are at they're roots, very different. The Wardens will do anything to stem the tide of Darkspawn. This includes blood magic and the murder of children. There is something that you have to understand about the Wardens in DAI, they were frightened that their entire order was about to die out. They were all experiencing the Calling. If Grey Wardens are the only people with the ability to kill the Archdemon, and they were about to become extinct, of coarse drastic measures would be taken.
Don't get me wrong, I'm not defending the Wardens in DAI, nor am I ragging on the HoF, I'm just simply laying out things the way that I see them.