I still think it's poetic that Bp. Fellay was the Bursar General of the SSPX.
He basically "carried the purse, and the things that were within".
Priests being considered for "accounting duties" should be given a special silent retreat, with plenty of meditations on the fall of Judas, etc.
There's something about engrossing yourself in financial matters that causes you to have more worldly thinking about things. This is what happened to Judas.
Gods ways are not our ways.
But when you're a bursar or accountant, you are focused on things material. It's your JOB to worry about such things. The bottom line, numbers, income, expenditures, real estate values, etc.
You need to pick a real saint to fill that position!