The tech has really advanced in the last 13 years, Cameron's writing? No so much.

This is just a continuation. And, the: 'Here's another race, let's prove we can work together and be friends thing' took far far too long. An hour could have chopped out - and the movie would only have better in its pacing and story-telling. Far too much SFX show-boating.

Other random thoughts:

-- The plot is Avatar meets Born Free via Star Trek IV: Save The Whales by way of Dr. Dolittle.

-- Interesting that both Avatar 2 and Black Panther 2 have a focus on Sea People (Talokan in BP2)

-- The inter-breeding here reminded me of Ana Stelline, the Replicant/Human hybrid in BLADE RUNNER 2049

-- The Feral Boy (Spider) is a clear nod to the Feral Kid in THE ROAD WARRIOR. And, I didn't buy the final stand-off for a moment. It's a screenwriter's wishful script deus ex machina.

-- James Cameron can still direct action, but he really needs stronger co-writers. Especially, with dialogue

-- James Horner is missed. His theme is still here, but Simon Franglen's score is generic.

--- The HDR isn't as noticeable in 3D. When I flipped off my glasses, I noticed the 'video' look more.

Overall, it's ok, but, really just a fancy super-expensive "sequel". Not really excited about future sequels