I thought the effects looked amazing. Since the turn of the millennium we've had movies switch over almost entirely to digital effects, but pure cgi still just doesn't look really real. It's missing some ineffable emotional weight that makes its fruit not quite believable. TFA, in trying to recreate some of the look of the original films using practical effects, also had the effect of saying, look what we can do when we combine real things that are actually in front of the camera with state of the art digital effects. I don't think I've seen a big special effects movie that looked so actually real since the golden age of practical effects in the 90s – movies like Jurassic Park come to mind.