Of Miami, Brooklyn, Indiana and Boston... it's pretty clear we are the least threatening team. Obviously they'd want us in Round 1. That'd be a cake-walk for them. It'd be over in 3 games.
I don't think you have watched Miami and Brooklyn if you think they are more threatening. Their SRS, point differential and amount of times they have been blown out is off the charts. Brooklyn has lost 21 games by 10+ points. Miami has lost 28 games by 10+ points. For Miami, that's Detroit, LAL, Sac, Orlando bad. They are easily taken out of their game. Those teams are lucky to even have the record they have based on how often they give up and get mentally thrown off their game.
Anyway it doesn't really matter. The Cavs are heavy favorites no matter what. They aren't positioning themselves for an "easier" 1st round matchup. That'd just be silly. They are just doing it for rest like any other NBA team in the history of the league who has had their seed locked up.