Excellent, good to have you in! I'll reserve a spot. Nen is awesome, it allows you to be wildly inventive, as you said it's basically all encompassing haha. Not a lot to be honest, I won't spoil anything for you. Not a lot has been revealed post Chimera Ants so there isn't a lot you would be missing. I want this RP to work for people who have a basic grasp of the universe and nen, so you should be fine. 
 
 Haha, I think that you'll find that Gon breaks all most all of my rules:
 1. He's related to Ging and himself, and his mother haha
 2. Ok, he's alright for this one
 3. If you were to use him as a character he would be copying his own power
 4. His super saiyan power has a massive cool down as its limit
 5. He's much much stronger than Morel, even if morel is significantly smarter, with a more interesting ability.
 
So you're spot on!