I felt the same but did enjoy the ride all the same. I guess what can be said was that the first movie was good enough for me to endure the sequels. And the animatrix makes me think there is more story here that could be explored.
Yes, that is true. The Animatrix is a great film, and The Second Renaissance is in my opinion the single greatest piece of animation to have ever been created.
Could I please just get a full movie of The Second Renaissance? :)