The main critique (like everything after T2) is that the fundamental story was bad.
- The first 10 minutes undone the story of the second film.
- The new model 101 character was bad - they just created him to get Arnie involved, rather than create an interesting plot point. I think they should have made Arnold play a human character which skynet would use as the basis for all model 101s in the future.
- Why didn't Sarah try to stop the war like in the second film? Who/what are Legion?
The film had good action scenes, but ultimately doesn't live up to the hype of the second film. Disappointing.