From the Celtics side, Brogdon played only 17 minutes in Game 4. White played 27. Seems like an easy move to get The Assassin up to 34 and Brogdon down to 10ish. I'd guess the Celtics have a fairly tight 7 man rotation (+ brogdon for 10) at this point, barring foul trouble.
On the Heat side: They are going to be awfully thin if Lowery gets in foul trouble, as he typically does. He might need to be less aggresive, which will curtail his effectiveness. Love has been a large detractor since the Celtics moved away from two bigs, so it's hard to envision him getting more minutes. Zeller spells Bam, so we shouldn't expect a change there. Caleb Martin played 35 minutes in Game 4, so we can't expect him to play more off the bench...
Duncan Robinson.... he was -12 in only 11 minutes in game 4. In games 1-2 he was net 0. I won't look at the game 3 box.... Hard to see him getting 20+ minutes.
Strus is already in the mid 30s, is he going to be higher? His 3 pt shooting has already started to slip (3/5 game 1, 2/5 game 2, 2/8 game 3, 1/5 game 4).
Lowry has been near 28 minutes. Can he go to 35+?
This is a huge void for Miami. I'm not sure how they can play with their intensity levels and 3 point shooting with an older core forced to play 35+ minutes on the road, after a flight when they got in so late.
Also did they fly out Vincent only to see him ruled out? That's a lot of travel for an ankle injury.