Carolina got hot towards the end of last season when Hubert Davis leaned into the Iron Five and played his starters heavy minutes, famously not subbing any of them during the second half of the Duke game in Cameron. When starters were unavailable, either through injury or horseshit ejections, the balance of the system got thrown off, and UNC suffered.
For Carolina to take the final step towards a national championship next season, Hubert Davis will need to be able to go deeper in his bench to 1.) protect his starters and 2.) show variance in play style.