My nephew is being recruited by several D1 schools but is very seriously considering going to a D3 school because he feels like he has a lot of faith in the coaching staff. In particular he loves the hitting coach, who he has taken a bunch of lessons from and he feels as though his longterm (and long shot) shot at MiLB is best served by working day in and day out with this coaching staff and especially the hitting coach. He also likes the campus, the curriculum and the general vibe of the school. But to be honest his main reason for the choice is Baseball. If he can't make it as a pro he wants to coach.
It isn't even so much about playing time. His particular position, 2B is held by an All-Conference Junior this year who will almost for sure be back for his Senior year, so my nephew will likely see very little playing time before his Soph year at the earliest.
How unusual is this? He is considered a legit D1 talent. His high school coach thinks he is crazy to pass on attending a D1. I think it makes sense for the kid to go where he feels comfortable.