What are you trying to say? You can choose, or you can't? I'm saying that you can choose your ability, and the closer it matches your natural affinity the easier/more powerful it will be.
The whole idea of a nen-purging ability isn't to make it good for combat. It's to make the other person suck. You give yourself a nen-purging ability while training your own fighting ability without Nen. If Killua had Nen-purging as his ability, he'd turn other people into normal folks while he remains a top assassin. Imagine Rock Lee with an ability that seals Ninjutsu/Genjutsu.Originally Posted by DE
It's not useful against non-Nen beings (say, physically strong chimera ants), but it specifically makes you a Nen-user assassin. In the regular human world, strong nen users are likely to be the strong people around.
I'm sure the system was discovered by some Nen Sage of the past and not some mainstream Hunter Administration Hotline. The categories are designed to tell you what you should do to maximise your potential. You're right that Killua and Gon are 1-in-a-million progidees and can do different things. If Gon went to become a specialist instead of an enhancer though, he might as well be a normal specialist instead of being a 1-in-a-million Enhancer.Originally Posted by Kraco
As for the "specialist" thing, specialists are people who don't fit into the aforementioned categories. You use the water divination technique to find out. They're the outliers. As far as we know, while Gon and Killua are good they aren't these "outliers" who do weird and wonderful things. They're good - but a specific type of good.