DAI did do 2 things better: Dialogue wheel options and romances. I hope the ME team incorporates these approaches into their game.
That said, the visuals of the scene are not that important to me, unless it's ridiculous like the underwear shower thing, but I think they know that now.
What I really want is more Emotional sizzle out of the romances. A nice, emotional build up in the game through banter bits. A LI that initiates things! Hell, make me a little jealous by having them flirt with someone else before you're officially a Thing. Let them express a little jealousy if you flirt with another npc. You did that ME1 with Kaidan/Ashley and Liara..it was adorable.
Oh, but do get the eyes right. The eyeballs. The characters in ME3 all seemed to have these...bulge-y eyeballs. Sometimes they were okay, but most other times they had this strange Michael Jackson/Skeletor thing going on with their visage. It was very off putting.