It possibly can, what we find though is before launching any complexity at all can have profound effects. So for now it’s based on how quickly the network needs you back. So if no action is required from you for 6 hours then cool, but if you miss a few actions you should have done then the section will consider you non-responsive.
So if the network is quiet then you can be offline a wee while, but if it’s busy then the actual time you could be allowed off will be much smaller. In all cases though restart/upgrades should be fast enough.
The problem here is, was the vault an Elder, then it would have been replaced as an elder quickly. If it was an adult then data would be relocated pretty quickly. You see the complexity quickly builds. I would really like the network to be the referee in how long here. However what you suggest is an algorithm tweak, just right now it would be a fair bit of work to calculate all the edge cases and possible attacks.