If Araki wrote HxH ... The story would've started with Ging's adventures, then Gon's, and then the story of the Freecs family would've continued for generations.
If Kazuki Takahashi wrote HxH ... The story would've became all about the Greed Island game after the Greed Island arc.
If Oda wrote HxH ... Nen wouldn't be as amazing as it is. Powers and abilities would either be attributed to being superhuman or magic fruits or something.
If Toriyama wrote HxH ... He wouldn't remember writing it.
Oh boy. This looks fun. Let's see
If Akira Toriyama wrote Hunter x Hunter we'd see alot more of Leorio for comedic purposes. Gon would be the strongest Hunter on the planet and have to travel to other Hunter planets to meet people with strength even close to his. The Phantom Troupe would be named after Fruits. All the villians in Hunter x Hunter would look like creatures out of fairy tailes, and Hunter x Hunter overall would be alot more comedic. Also, no hiatuses as Toriyama would think of the shit as he goes along
If Kubo wrote Hunter x Hunter Gon would be a senior in high school, Kurapika would be a D-cupped girl. Killua would be a B-cupped sophomore, and Leorio would be a creepy 49 year old, old dude. Hunter x Hunter would also be written by copying arcs from all the other popular works in JUMP and tweaking them.
if Hiro (Fairy Tail creator) wrote Hunter x Hunter all the girls would be D-cupped and all the fights in Hunter x Hunter would be boring and predicable.
if Norihiro Yagi wrote Hunter x Hunter it'd be....amazing. Simply amazing. That's that best way i can describe it. Perfect in every way.
If Araki (JoJo's Bizarre Adventures) wrote Hunter X Hunter, we'd get chapters upon chapters where random nen users try to kill the main party (with almost every encounter being a near death experience). We'd have characters/abilities named after various musicians, bands and songs too.
If Oku (Gantz) wrote Hunter X Hunter, we'd have entire chapters consisting of highly detailed scenery, short dialogue, multiple large panels for slight facial expression/body language changes and exposed boobs where possible.
If Kishimoto (Naruto) wrote Hunter X Hunter, we'd have seen Gon power up and beat the Chimera Ant king and the election arc would introduce a new enemy stronger than the king. No ability is valuable unless it is flashy.
What about Akira Toriyama?
If __________ (fill name of author of anyone except Berserk here) wrote HxH , we would have a lot more chapters >"<
If Hideaki Sorachi write HXH, Gon will love slacking of at their home than go to Hunter Exam, but Some Way Gon will be there in Flashing, And Biscuit will be clinging to Gon every chapter