I don't come on forums often and I appreciate threads like these being started for me to talk about a topic I'm interested in. If you've discussed it already and think it's been done, well, bully for you. Go read something else and let us get on with it.
Remind me what input the player had in that scene?
Remind me what part of the actual war before that we got to see in game?
The conflict between mages/templars was built up to be a massive thing over 2 games, then got resolved in a 30 second cutscene, after completely skipping the actual war part.
God this. I don't want to have to read the four books I currently have, three comics and play a ton of DLCs to understand the whole story behind Dragon Age. This was a massive disappointment, as was the whole depiction of Orlais. If I didn't read Asunder or Masked Empire I was screwed - I had to read it afterwards. I am with the argument that if they somehow brush the whole Solas/Inquisitor issue under the carpet with some rubbish letter or it's dealt with in something else I have to spend money on I'll be saying bye bye to DA (not that it matters much I guess but still!).
As for the Inquisitor - I want mine back. I love the idea of a dual protagonist (the days of Halo 2 with the Arbiter come to mind which was fantastic although I grant you a different game entirely. But the concept was awesome.). I have also invested a huge amount of time, effort and money into the DA series and I'm fed up with yet another protagonist. Does it mean my previous 3 were worthless, to be dismissed so easily on the impact they had on Thedas? Just my personal view. I put a lot of love into my characters and I would like to see them return in some meaningful capacity.
The argument that it is about a world rather than a character is not necessarily applicable and, I think, a weak one. You can just as equally argue that, if this is a global threat then the Inquisitor/Inquisition are the only people equipped to cope with the crisis of Solas ripping a huge hole in the universe, along with the fact that the Inquisitor knows Solas far, far better than some random who doesn't have a clue who he is. I found that line at the end of Trespasser, that Solas knew how the Inquisition worked, quite lame.
There are now too many outcomes and the lore is becoming looser and looser, with even more errors than before. How they are going to cope with yet another protagonist, with yet more new characters, with even more choices and then work it into a plausible game towards the end of the whole series I have no idea (is it 7 or 8 games in total?). I also don't want to see a heap of stuff retconned because they've decided to change direction suddenly - essentially that means they've lost control of the storyline which SHOULD have been plotted well in advance. Lyrium still irritates me to this day. I play for the lore and the story and this stuff matters 
Look forward to seeing what you do with your website 
Oh and my Inquisitor can kick ass just as much with one arm as she can with two. Because you lose a limb you're suddenly worthless? What's that even about?