I guess this is why updates have to be rare if possible.
Would the effect of instant (or up to 1 week) enforcement really be that bad?
Well, if that is the case and I end up forfeiting my MN payment to a MN that hasn't updated then the only sensible thing for me to do going forwards is to only update 50% of my MN's. Then only update the other half when i have to. That way I spread the risk.