Hi Greg! Yes, I think multi-sig should only apply for really big allocations to an address. In my mind it seems reasonable for security, peace-of-mind for the holder, and diligent from the point of view of INDEX investors - so less about my personal trust of the person holding the funds and more about belts, braces, and reputation.
As for the threshold for requiring it? I don’t know. A portion of INDEX deemed significant enough to risk swinging votes, impacting price dramatically, damaging ongoing Coop operations from a budgetary standpoint - at that kind of level. Maybe there is no danger of that.