if I were in the position to buff it, I'd make it half health maybe, and no chakra, or maybe just enough to get one flicker or sub off so you don't instantly get combo'd again, and idk if it has invincibility already (I never get it to activate ), but maybe 2 seconds at MOST
The changes with FULL HP, FULL CHAKRA, 8s of INVINCIBILITY, yeah sure will of fire blah blah blah, suna and mist have op passives sure, but let's not go that far lmao (I'm leaf myself)
Honestly, the last bit of trying to put logic into it, anything naruto does in the anime like that situation you mentioned is because he's a main character, you won't be catching Ino having the will of fire and becoming 10x stronger lmao, ofc this isn't to say that wof doesn't deserve a (at least slight) buff, but I'm just saying the last bit was kinda useless to add