Kat/Maryanne
I would not rely on just one person doing one thing. He has ignored some of the strongest magic I have ever witnessed. Neville just offered to put up wards and warning spells. Everyone who can put up wards should put them up.
We need to know who as well. You remember how Lucy and the others arrived from a parallel world? Higgs said he wants to save his people. What if these are parallel version of us or other people who are possessing our people? Or what if Higgs is messing with the minds of some of our people? What if we assign someone who has been meddled with a crucial role?
I agree. Is it worth checking who is willing to help us first?