I don't think so. He looks to be more intrigued to see that there is another Uchiha roaming about, so he might try to get some answers out of him before doing so.
I wouldn't say nuke since he won't need to lift more than a finger to neg him low diff. Naruto can't touch Sasuke at this point, he's too far ahead in the shinobi game
I really hope there is a good fight. It's kind of unfair and dumb for the villain to go up against two strongest individuals when he himself is vastly weaker.
That's why I'm hoping the villain is actually powerful and see Naruto or Sasuke go all out in an epic battle.
Naruto/Sasuke probably won't face Shin/His father directly for story reasons, It's not like there are many things in NV that could pose a threat to those two, my guess-they get trapped in some dimension and Sarada, Bolt etc have to face those two alone(shin) , that's when she awakening her sharingan and stuff, this new arc is all about the new gen after all.
No he let the kid escape after their encounter due to being stunned at the sight of another Uchiha so he sends word to Naruto and he'll be the one to take care of the blond kid.