Na'Vi-Human Genetics... Children?

[Patrice Maire]

Okay, here's my thought:
Jake and Neytiri are going to have kids...they should at least. So.... are they going to have four or five fingers? Technically any children will be mostly Na'vi and only, say, one third human. We don't know how much of Jake/Tom's DNA was mixed in, and since the digits (fingers and toes) are the biggest tell, I'd say any children they have may well look like full Na'vi.

Now if, by the time the sequel comes around, Neytiri has given birth to a child, it will be only a few years old and it would tie her up in the action department. The other side of the coin is, she is expectant in the sequel or has her baby toward the end of the movie giving us an uplifting end.
So help me if Cameron pulls a Lion King move it's going to be really annoying.