Unarchiving: Need to select more than 30 items at a time

When unarchiving items, the maximum number of items that can be selected at a time is 30. That’s if you use the shift + click feature that is also available when archiving; however, when archiving, that exact same feature allows up to 500 items at a time. Why does the same feature only allow 30 max when UNarchiving? We have tens of thousands of items that we need to unarchive. PLEASE install a button to select 500 items at a time, or update the shift + click feature to also grab 500 items when unarchiving. Or, shoot for the moon and make it 1000. We need more than a 30 item limit, pretty please? With extra please-burgers?