[forfuckssake]

I would have really liked to have seen Neo training others to be more like him, such as for instance a Nagual might do.

Just something to peak your curiosity (or to sustain mine!):

Carlos didn't train anybody because he's not a regular Nagual but a 3-pronged.

Neo didn't choose to save the 'human race' (instead Trinity) because he's not a regular 'the one' therefore didn't have to choose "16 females and 7 males" as the Architect said. Instead, he chose the 'other door'.

Neo is the Carlos equivalent.
Just like Carlos brought a new era for everyone to take advantage of (as described in Encounters with the Nagual), Neo brought a new era for people still stuck in the Matrix; hence the end scene when... well, if you're interested, you'll check it out!