Regarding critical damage with the revamp

What sort of testing would need to be done. My aran has crit ring + a machlear, and I could get someone to SE me. I just don't like using it except for display purposes as I don't wanna bring down the durability % and end up paying to fix it T.T

The cost of durability item fixing has been lowered iirc.
You could get SE and prove us all correct/wrong.