One issue I would have concern about regarding this is that in Masked empire, Fellassan says that few Dalish actually live in the Dales. As we know we won't be venturing out of Ferelden or Orlais, I don't see the Dales being a focus for the dalish.
Briala is going for the "Elves of Orlais", she says she will take help from the Dalish but they will have to come asking, she won't seek them out.
The Dalish may be gathering in the occupied kingdom of the Dales (with the artwork showing a Dalish clan in what appears to be the Emerald Plains), while Briala wants to help the elves with the Eluvians. The Dales is also noted as a separate location from Orlais when it's been discussed, rather than part of it.
Felassan also makes it quite clear that the Dalish themselves don't agree with the way we have interpreted the meaning of WoT and Merril on demons and spirits. So either we misinterpreted, or it has been retconned. Because while Fel says you could call it stupid, he makes it very clear there is nothing wrong with the Dalish dealing with spirits.
It would have to be retroactive continuity if we're going to dismiss multiple conversations and dialogue from Merrill in addition to the World of Thedas about their view on spirits, perhaps because of the alleged powers of the Inquisitor in summoning creatures from the veil. Or perhaps because of the situation with the voiced protagonist. Either way, I'm really not a fan of diluting the uniqueness of the Dalish cultural and religious perspective to make it no different than the cultural and religious views held by Andrastians. I don't see the appeal in playing as a re-skinned Andrastian.