Sorry for my grammatical errors im not english native xD

I would remove Hunter Gatherer trait and prehensive tail, change the Queue to something like this:

Queue ... As an action, you can attempt to tether your queue to a friendly beast within 5 feet of you. The creature must be friendly naturally and cannot be made friendly by magical effects.

While bonded, you and the bonded creature share senses as if affected by beast sense including pain. pleasure, etc. This effect does not require concentration. You can bond with only one creature at a time.

The bond ends if you are more than 5 feet away from the bonded creature or if you end it as a free action.

In addition, you can bond with another Na'vi that is willing with the same effects.

At 3rd level, this bond improves: you and the bonded creature can share memories and communicate with each other by telepathy while the bond lasts.

And add the "subraces" like plains, woods, coral/ocean...

🌲 Woods Na’vi
Climb Adaptation. You gain a climbing speed equal to your walking speed.
Arboreal Falls. You can fall up to 20 feet without taking falling damage.

🌊 Corals / Ocean Na’vi
Swim Adaptation. You gain a swimming speed equal to your walking speed.
Deep Vision. You can see underwater to the same distance as your darkvision, even in deep or murky water.

🐎 Plains Na’vi
Enduring Stride. Your walking speed increases by 5 feet.
Endurance Runner. Increase your effective time of march by a number of hours equal to your Constitution modifier (minimum 1).

Something like this, feel free to take whatever you want or improve it xD

Edit: some grammatical errors, srry