I consider myself very picky regarding picture and audio quality. For instance, I see all sorts of problems with the Star Wars saga, the Bond set and even the filtering in Titanic and Jaws. That being said, from the caps posted here, the PQ for the Terminator seems to be amazing (color change notwithstanding).
The grain looks like real grain as in Aliens and nothing like the manipulations of the old transfer seen here. Despite JC claims, I don't think either of these (Aliens and The Terminatior) were actually degrained and re-grained. The results look nothing like the Bond films, Grease or many others that have suffered from this sort of 'digital mastering'.
IMO, they look like the Evil Dead, Sound Of Music and many other great new transfers. The color grading shift doesn't please me, but at least it seems to tolerable.
Now, the big letdown and what concerns me the most now is the audio track.
To mux the video stream from this release with the LD PCM track would be a dream come true (I could say the same about Jaws).