This competition for minutes is intense right now. Pretend your Ime Udoka, and your trying to keep everyone happy. If the roster is 100% healthy, this is who I think should play 
PG Dennis 28 mpg, Smart 12, PP 8,
SG Josh 20, Smart 20, Prichard  8, 
SF Brown 35, Josh 10, 
PF Tatum 36, 
C Horford 24, Timelord 22
 So that leaves 14 mpg for Nesmith,  Parker,  G williams,  Kanter,  Romeo, Dunn, 
 Keep in mind Prichard is only playing 16 mpg in my example and he played 19 mpg last year as a rookie! So he needs even more minutes.
For me  I'm giving this minutes to Nesmith or Parker or even more minutes for Prichard.  Whoever is shooting well should get those minutes.