Solas may use bad grammar to a friend but the hostile ending makes it quite clear that he removes the anchor so you will not die, because he set up the south for a few years of complacent peace before he pulls the plug and your dying my spoil that. That, along with my dislike of placing the Inquisition under the Chantry, is why I prefer disbanding altogether. Why should I play peace maker just so he can feel better about himself? Besides I got the feeling he expected me to keep the Inquisition going, so I liked to keep him guessing.
He says enjoy the time you have left because, even if you are an elf, you are going to die along with all the rest. Quite why he thinks you will simply be content to sit back and enjoy life while you can is beyond me. Still if you say you will stop him, he admits he thought that would be your reaction.
The problematic part for me is that requirement for you to make a choice. It suggests the Quizzy will be involved in some way in the next game, even if only in an advisory role. One of my friends couldn't play Trespasser on their X Box as it was an old one, so I suggested he play through using one of my PCs. Then I also showed him the ending with Solas romance, so he could see the difference. Quite unsolicited his reaction was "so we'll be playing the Inquisitor again next game." The reasoning for this is the personal involvement and the way the Inquisitor says either: "I will prove you wrong" or "I will stop you." If the idea was that the PC intended working with others or letting someone else put in the main effort, surely they would have said "WE". Not to mention Solas haunting the dreams of the romanced Inquisitor. Like she is just going to sit around and do nothing. However, against that you have the discussion about how we would need new people that Solas doesn't know and the Devs have said in the past that there would be a new protagonist each game. So I'm still inclining towards a cameo role of some sort.
I'd definitely be upset if they just killed the Inquisitor off stage and almost as much if they do so it in some horrible unavoidable way at the beginning of the next game.
As for the arm, that is something that can be overcome with a bit of training, even without some sort of substitute. However, in this world of magic, I do not believe it wouldn't be possible for someone like Dagna to come up with a fully functioning alternative. I've said it before, if they could do this with magic for the hero Nuada in the old Irish sagas when he lost his arm, then they can do it in Thedas. So we can have time travel, fade walking, gigantic moving statues, golems and a horse construct that can fly and cover great distances at speed but we can't have a magical prosthetic arm?