I wonder if it may go hand and hand with the traveling hat idea. It may be more just to get the brand out there. Get kids mentioning Nebraska in their high schools. Maybe they have no interest, maybe they aren't going to come here. But maybe that up and coming sophomore with distant ties that is coming into his own is more apt to listen next year when Nebraska comes calling? And maybe not, maybe we are just shotgunning offers and praying, but it seems this staff definitely has high valued "targets" that they spend a lot of time an resources on, so I do feel there are various tiers of value placed on the offers.
This is probably part of it.
The best explanation I've seen is it's hard to get a lot of kids to be very interested and want to come on their own dime for an unnofficial visit if they don't have an "offer". So we're mainly trying to get as much interest as we can and then pick from there. Rising tide raising all boats and such.