Kabuto is like oro, i don´t think getting stabbed,slashed or even rasengan is going to kill him.
Furthermorre, you really can´t win against minato, he´s such a *****, even when you´re stronger, you want to deal the final blow and he ftg to his house. You try to kill him in his house, he ftg back.
Hahahaha! Mayn that was funny but true, but I think kishi wouyld use plot no jutsu to make it that Minato can't do that, its like Tobi, how will the alliance kill him when he can just absorb himself into his space time jutsu and disappear, but kishi will use plot nio jutsu to find some weakness, actually, konan already did find a weakness, lol, but I don't know about FTG.
I don't think Minato would need to do that though.
He can summon ma and pa and then frog song all of them, and then seal them away.
Besides, FTG gives you more of an advantage the more enemies you have because they can't predict who you're going to attack at which moment since you can just spam kunai all around the battleground and attack anyone at any moment, the movements are unpresictable in this case.
Kabuto can be sealed just like the kyubi was sealed with Minato's Four Elements seal.
Minato can also break Kabuto's control over his edo's with his contract seal like he broke tobi's control over the fox, then the edo's will attack Kabuto lmao!
It aint impossible for minato to beat Kabuto, in fact, with his jutsu arsenal, he is the most suited person to take on Kabuto and his edo's in the elemental nations, he has the perfect counters for whatever kabuto has to offer.