Konoha reconstruction arc??? Thats what fillers are for xD Could you imagine the amount of people that would have dropped the manga had naruto been stuck in the leaf rebuilding shit for even 20 chapters.... thats half a year, arcs are more than 20 chapters.... and if you don't get the point of Gais flashback during his fight with madara i can't see how you can call yourself a fan... And what that flashback signified for his character.
Back when it was the first flashback he barely took his dad seriously and questioned why he always did that "Thanks for cheering me on" Then we the reader learned of Dais death and how it impacted Guy to be more like his Father which is why he's so goofy lmao, so when Guys very first words to kakashi that started their eternal comical rivalry were "thanks for cheering me on" it makes Dais character more significant, and Sakumo noticing the dirt and bruises on guys fists and feet and clothes, he told Kakashi that he's already on his way to surpassing him. Because he's been working hard. Which is exactly what Naruto told sasuke about bushy brows, after he noticed his hands and feet.
So when kakashi thinks to himself you're right dad, its goes way back to that age old question that Rock lee brought up. Between 2 rivals which one will eventually surpass the other? The Naturally talented genius or the one who works for all he has and strives to never give up?
Then Guy opens the eigth gate.....
And kicks madaras lungs out.
You'll appreciate it more in the anime, if the animations u to par