It's the stealth applicant season when those who aren't on your radar submit an application without warning. It's always great to get an unexpected application, but there's a downside to these surprises, too.
The challenges that the stealth applicant brings are important to consider. You can't get a handle on what enrollment "might look like," if you have a large number of people who don't give you advance signals. You also don't know if they are just submitting a safety application, or if they are a good mission fit at all.