As I think BYU is a superior program in name and long term success, but Kalani just came from Utah, where he's been for a decade. He is trying to do what whittingham did, or at least that is how it appears to me. Before Utah joined the pac12 their recruiting focused on under recruited, lower ranked kids that had tools but were unpolished or lacked some of the attributes that make a kid a highly ranked recruit even though they had some of those attributes.
For instance, they'd recruit a kid who was fast but maybe was skinny, or shorter. They could get those kids because the bigger schools were taking the kids that were big and fast. They would then develop them and also hope that theyed fill out and mature while they were in the program. Same with linemen, take an undersized kid with talent and then try to get him bigger while he was there.
This is what we are seeing from Kalani with the difference being that BYU is pursuing some higher rated kids because they are coming from a stronger position than Utah was coming from at that time. BYU can actually land an occasional 4 or 5 star kid because of their name or because of an LDS affiliation whereas Utah was not able to get that kind of kid then, they actually still don't get very many top recruits.
So my admittedly uneducated guess on this is that they are trying to get the undervalued kid that lacks some attribute that would make him a higher rated recruit then "coach him up" while also trying to get a few more of the higher rated recruits than Utah was incapable of getting and maybe making the process quicker than it was at Utah.