That would be a nice feature for sure. I also wish there were options for managing an excessive review pile after the fact.
An option to retroactively apply vacation mode after a hectic week of forgetting to do any reviews (or have it automatically turn on if your review count exceeds a specified number), or an option to break the current review pile up into smaller groups that would show up gradually over the course of several days (like putting a pile of 400 reviews back into a queue to have them show up in increments of 30 every 4 hours or something) would be amazing enhancements IMO.