2. Jonathan Smith is loyal to his staff
The Michigan State football staff is just about complete except for one more defensive assistant coach, but from the nine on-field coach hires we can take away that Jonathan Smith trusts his guys. Of the nine coaches hired, six have been with Smith at Oregon State including his offensive coordinator Brian Lindgren. Smith even tried to bring Trent Bray over from Oregon State to call the defense, but he ended up staying in Corvallis to be the head coach. Not to mention the off-the-field support staff Smith has carried over to Michigan State.
With Smith bringing over a plethora of familiar faces, it reminds many Michigan State fans of what Mark Dantonio did when he came to East Lansing from Cincinnati and brought his guys in who he trusted.
It's clear that Smith has a level of loyalty with his guys which means there should be a good level of continutity within the staff. A large complaint from fans during the Mel Tucker regime was the seemingly endless revolving door of assistant coach hires. Many guys were here for a cup of tea and moved on to their next coaching destination.
It's too early to make a claim that there won't be a max exodus of coaches during the Smith era, but given the evidence I would highly doubt that's the case. Smith trusts his coaches and in turn, he has their respect. The foundation of this staff is already built on their success at Oregon State, now they're just carrying over that foundation and laying new roots in East Lansing.