Am I the only person to think that it is reasonable for Solas to do what he does?
He explained it quite plainly already: the elves were magical to begin with. Losing the connection with the fade is what deteriorates the elves; hence the elves now have short lifespans and smaller, weaker bodies. That's probably also why when elves have children with other races, the children only have traits of the other races. What is to say that the elven race would not deteriorate further in the future? They were not well off after their deterioration, can they compete or even survive in the future world?
I think Solas is not only correcting "an old mistake", he is also trying to protect the entire elven race from possible demise, by creating the ultimate fertile ground for the elven people. It is like bring about a climate change. I don't think he intends to pick out the non-elves and slaughter them one by one, but in the post-fade world, elves would prevail, darwes would be ok too since they co-existed with the elves, no so sure about qunari. Would humans adapt well to that world? they probably wouldn't, or maybe they would, who knows. The world would not be destroyed, it would just change.
It is unfair to say that Solas is out of his mind for wanting to change the world. The Elvhen was his home, his family, his friends, and he loves them more than he does this human-dominated world. This is probably why so many elves joined him. They are fighting for a chance: even if they don't make it, their children may live in a world that's kinder and richer to them.
If aliens have invaded earth a thousand years ago and are living quite happily now, would you, as humans, truly drop the chance of turning the world back in your favor??
Of course, Solas explains himself quite well, and he is a very tragic character and I feel how torn apart he is as a player. He is full of the dread that gave him his name and he longs for the world that he lived in to exist again. He's, to put it simply, incredibly homesick. And he is my favourite character in a game of all time!
But: That does not make his choice right or something we should appreciate. What Solas sees is a 'world full of tranquil', where no one is a real person to begin with - at least until Inky proves him otherwise. I would not call him racist, rather, he simply dehumanises everyone that he meets because those people are far from what he once knew and because he cannot understand them, he thinks it is alright to leave them behind to restore what once was. Solas goes to sleep and wakes up thousands of years later, in a world where the elven gods are myths and legends, were elves have lost almost all of their history.
But that does not mean those (elven) people aren't worthy of living! Solas completely ignores the point that his world was just as corrupted - instead of Tevinter magisters, his world had immortal elves. Instead of elves enslaved my humans, the elves in his world were enslaved by their 'gods'. He thinks it is sad that dwarves have a severed connection to the Fade, but he fails to realise that all of those dwarves are still just living their lives and shaping history along the way.
The elven people of modern Thedas might be weak and just a tiny fragment of what they once were: But the stories of the Dread Wolf and the gods that he sealed away are in modern Thedas just that - stories. A religion that the Dalish try to preserve, but nothing more than a religion and history all the same. Solas fails to realise that the Dalish, however scattered and fragile they may be, still have a culture to hold onto - a culture that they shape themselves. Compare it to our culture: The Swastika/the symbol that it is based on has been shaped to mean something entire different in (parts of) our culture because of how Germany used it during the time of Hitler. You cannot say it is entirely the same situation as with the Dalish, but the fact remains that symbols and stories change over time. If the Dalish use the vallaslin to honor their gods, however f*cked up that might be for Solas, then he has no right to claim they are wrong in wearing them with pride - he can try to teach them, but it is their choice if they listen or not. Solas just woke up, sees something that he never wanted to see and wants to restore what once was - but he entirely fails to realise that he just slept through hundreds of years of history shaped by the people of MODERN FREAKING THEDAS, not his ancient elven clique.
I do think Solas has noble intentions - for, you know, his people. The people that he knew 'a few years ago', but those people don't exist anymore in the grant scheme of things. He cannot claim to save the elven people by dooming everyone else, not to mention that the current elves are just as alien to him as any other race. Solas doesn't want to slaughter everyone, but he firmly believes that his ends justify his means. In the end, modern Thedas isn't worth it in his eyes, even though the Inquisitor has stirred something within him that firmly believes it IS worth saving. It just isn't enough.
Solas wants to change the world because HE thinks it's the right thing to do. Does he actually take the time to ask the Dwarves, the Qunari, the Elves, the Humans? No. Because he doesn't even think they are people, as long as he looks at 'all of Thedas'. I'm pretty sure most of current Thedas would tell him to stick an egg up his butt for claiming to be the be all, end all. He says a god does not have to prove himself, but Solas is 100% trying to play god here.
He is a homesick person trying to right his wrongs by playing god.
And that isn't right.