Toy Story is a legendary franchise and Buzz Lightyear might be among the most iconic animated characters ever created. Taking risks and telling an unique story with these priceless assets is therefore a daunting task. A task which Pixar could not fulfill.
Characters in the early scenes of the movie are well written and the relationships well established. The newly introduced characters (which you spend most of your time with) are not. They all got potential, but they fail to connect with Buzz and therefore fail to connect with the audience. The main antagonist has the same issue. He could've been an interesting character, but Pixar went for the easy route instead. This means that we got to see a very generic evil villain, one of which we've seen countless times before.
The plot was predictable. Lightyear never tries to surprise you, stun you, wow you or shock you. You simply go from A to B to C (sometimes with an obstacle in the way) till the movie is over.
Lightyear isn't unique. Lightyear isn't touching. Lightyear isn't worthy of being called a Pixar production.
Except the cat, the cat was incredible.
