So I decided to use N's Zorua. At first my expectation were kinda high because it is a gift pokemon treated as a trade Pokemon, so you get more EXP. 30 ivs in every stat, Hidden Power Fighting with 70 Base Power? Sounds great. Hasty Nature guarantied? Sign me in.
But then you use it and it doesn't do much most of the game until it evolves where Night Slash starts to deal some damage. At that point I started to lose hope in Zoroark. But then there is a shining light at the end of the tunnel: Nasty Plot and TM30 Shadow Ball. Not very impressive but you can set up and break through problematic trainers.
However the real moment Zoroark became an MVP is when I found TM35 Flamethrower and leveled it up to 64 (which went surprisingly quick) where it finally learned Night Daze.
I swept 3 members of the elite 4 and almost beat Iris until her Haxorus showed it had Focus Sash and Dragon Dance where she turned the tables. In the post game Zoroark also helped a ton sweeping Cynthia and Alder.
The only thing that bothered me is that after Illusion is broken, the move cursor goes to the first move so you can't just spam A throughout the battle without worry once Zoroark shows its true form.
Sadly I never got to buy TM10 Hidden Power but found Focus Blast which I taught it. Was looking forward to try out Hidden Power Fighting for once in game. Oh well.