I'll give it the benefit of the doubt for now.

From the trailer alone, the end parts that seemed to be actual in-game footage did look slightly better than the "Not representative of the game" cinematic stuff.

Overall, artstyle is the least of my concerns when it comes to a Bioware game. I'll want to see the writing before I judge anything (My hopes aren't high given Bioware's recent stuff, but I can always be surprised)