Disagree. I want Inon Zur back, his music was so much more memorable than anything in Inquisition. There isn't really a single track from the Inquisiton soundtrack that pops into my head at any given time, whereas I still remember the main theme, character creation music, Ostagar battle theme, Denerim march, I am the One as the credits music, and virtually every track from the Leliana's Song OST.
I also really liked Aubrey Ashburn's vocals (most of them were even in elven), they added something to the overall atmosphere of the game that DAI sorely lacks in terms of music.
Trevor Morris' music doesn't sound like fantasy-ish at all, it could be from any historical movie that features a medieval setting. Then there is also the fact, that there is virtually no background music during exploration is DAI.