My problem with this follow up is that the first movie was an excellent mix of real live actors and CGI. This movie is almost all CGI so I felt like I was watching an "animated" movie.

The original therefore has a feeling of credibility...like humans might actually someday come upon other species in other worlds. This just feels like pure fantasy. It's a personal preference.

Technically Cameron does it again...brilliant visuals. Just doesn't feel fresh and groundbreaking.

Lastly...I feel it's a little drawn out. 3 hours and 15 minutes could have been cut down to maybe 2 hours and 30 minutes.