Minato isn't going to react to any of Kaguya or Hagoromo's attacks in order to teleport himself around let alone teleporting others.
Which has been evaded, or can be evaded by Kaguya or her son, and dafuq? I just realized that Sasuke wasn't even apart of your Team of 4.
Not enough of a problem to actually do serious damage to her. She'd destroy him if she absorbed more chakra from the IT victims during their fight.
Haha, hell no. Get that stuff out of here. Hagoromo destroys him.
Kakashi won't be doing anything to Kaguya while Hagoromo shits on him, and the manga already showed that Kaguya would have evaded their final sealing attempt if a 3rd person isn't there to box her in. She has very capable help here, which means she'll only have two people fighting her, in fact, Hagoromo can take on Naruto and Sasuke, or he can take on Naruto and Kakashi making it impossible for Naruto and Sasuke to gang up on and seal Kaguya.
But then again, Sasuke isn't in your team of 4, so they can't beat Kaguya anyway. Just another reason they get shitted on.