Answering your questions, OP, I will share my views.
Did the new information change my opinion of them? - Inquisition and TME just made it more clear for me why I didn't like the Dalish. From the very beginning in Origins I couldn't understand why I didn't feel anything for them. I liked the city elves much more.
Then it was Merril and although her goal was commendable I couldnt agree with her a bit (past is a past, just deal with it and create something new and beautiful) and I'm glad the in the end she's helping the city elves of Kirkwall (at least in my PT).
Their arrogance and pride is just annoying and is in fact groundless. They think that thay're so righteous and proud while in fact they know for themselves that they know nothing of their lore. (hope this part is not confusing).
I don't want to argue with people who love the Dalish and such, just my opinion.