A subset question seems to have come up which is if Nesmith isn't playing, then who is getting his minutes or whose minutes would he take if he did play. It is only 3 games but there is a pretty clear pattern already.
Smart (34 mpg), Brown (34), Tatum (35), Teague (23), and Pritchard (20) have shared the PG, SG, and SF positions for a total of 146 minutes per game or just over the 144 total available minutes for the 3 positions. Theis (21), Thompson (22), GWill (19), Ojeleye (15), and RWill (11*) for a total of 88 of the available 96 minutes for PF and C. Waters, Edwards, Nesmith, and Green have made cameo appearances to make up the remaining minutes (each have only appeared in 1 game).
Essentially you have 5 players sharing the the 3 backcourt/wing positions and 5 players sharing the 2 frontcourt/big positions. Nesmith is a backcourt/wing so that means to give him minutes from GWill or Ojeleye means more of the "small ball" (1-big) line up. So far, it has been pretty much 2-big line ups. Match ups may be as much of the consideration to play Nesmith as all the other things. That may be somewhat related to the specific match ups we have had with the first 3 opponents but it is clear that the Celtics are making 2-bigs the core line up.