The darkest choice I can think of in DAI is when you choose to support either the Templars or the mages. You forsake one group of people (Mages or Templars) to used and abused by Corypheaus. If you choose the mages, the Templars imbibe red lyrium to become the red Templars. If you choose the Templars, the mages are conscripted into the Venatori's service as slaves.
There is no "save them all" option.
Unfortunately I feel so disconnected from their plight that I honestly forget sometimes....
No no no no no, let's see.
The Templars are grown up adults who spent all his life training, yes, they are minions of the chantry, but they can refuse and leave, we saw a lot of templars during the saga leaving the templars, Alistair was "forced" to leave, but he never wanted to be a templar, he knew what Lyrium was really from.
If someone comes here with a new magical red like blood lyrium, everyone knows red = evil and blood, you just don't drink it.
There is clearly the good choice, mages, since mages are not warriors, mages are kids, old wo/men, people in general, you are letting hundred of people "who needs protection" be sold to slavery because of the stupidity of Fiona, in the templars they submit to Corypheous because of their own stupidity.