Does anyone think this will happen? Based on what we know it would take pretty extraordinary measures to get this done so there is a good chance the story straight up ends with Gon without nen. It does feel like a strange way to end the story but it would also make sense.
No - I think it's not the right time for him, like seriously I don't think he should get his Nen back too fast, he needs a better time to manage his attitude after CA arc, and I also don't think he should go to Dark Continent without any purpose. Since he found Ging, got his own time spending with Ging and after spending time during his own journey, he needed a good rest and spending time with Aunt Mito instead just to grow up, I highly doubt that we will see a good timeskip for him and Killua as soon as we got to be done with SW and 1/2 arc
Yes - I mean until he found something on his next main quest and learned about the whole thing after the CA arc and from spending time talking with Ging his journey, and found out that he has no Nen, of course, is temporarily (due to Alluka's curse or his Nen restriction during Pitou's kill). I highly doubt that Killua wanted the same thing with him, just to be safe, he had to be out of contact with Gon until he got his own Nen back or that's just part of his wish (I am still don't know with how did he gets out of Alluka's curse), they will back eventually, then I think later on, they will find out what happened to Kurapika and Leorio
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My best answer is depends on how the storyline takes place as keeping it real