Nyheim Hines has been more of a receiving threat back since he came into the league in 2018. He has been that because he is extremely speedy and shifty and has very soft hands. Reich apparently loves that aspect of his game and wants to use it more this season.
Hines is rarely used as a running threat. Even with how shifty he is, the Colts usually use Marlon Mack or Jordan Wilkins as the primary runners. Those duties will likely be shared between Mack and Jonathan Taylor now. That means Wilkins is the odd man out.