If Togashi were to [BODY TEXT SPOILER], how would he write it down, WITHOUT it being an asspull?

If Togashi were to give Gon his Nen abilities back...

Personally, Gon is too much of a character to just scrap him down.

His characteristic ability of being a center of situation, - a golden mean of bribing Innocence and animalistic courage to throw his own life at line, - (as it was portrayed in his Hunter exam match with Hanzo) is a great plot device, that created many interesting situations, and have a potential of it being even more engaging, if properly developed. This is our cook Togashi we're talking about.

Clearly, he would live a normal teenager life, without Hunter life's drive. For how long tho?

What if he wants to go further? His friends, connections. Would you really believe he would forget 'bout it?

But i can't think of any means, a method to bring him back into the story, as a Hunter. That is why i'm asking.