I am making plans for my version of book 7 (where Harry is a Slytherin) and I suddenly remembered that in canon Harry uses the sword of gryffindor to destroy the locket. Now through other plans I already have in place I was going to have Harry receive a Basilisk fang and use that instead, I even had an alternate reason for Harry and the gang to go to Bellatrix’ vault, but I just realized that Griphook only agrees to guide them in exchange for the sword. Now it is canon that a non gryffindor can hold the sword, just not summon it, but I didn’t want to use the sword at all as I was saving it for Neville.
So my question I need help with is should I replace my original plan with Harry still finding the sword, using it on the locket, and then giving it to Griphook to get to the vault, or should I use my original plan and someone help me figure out another way for them to persuade Griphook to help them.