Most seasons have a certain feel and theme that define them. Some years there are no expectations and the team overachieves (like 2014-15). Some years the expectations are sky high and the wheels completely fall off (2018-19). Generally speaking the team has an identity of sorts. Some seasons are defensive juggernauts and some rely more on offense. One year Isaiah Thomas was the King in the Fourth. Another year the stars got hurt and a young Tatum and Brown duo (with Al Horford) led us to the Eastern Conference Finals anyway.
I spend a lot of time thinking about this.