Big improvement to the bench. They had one of the least productive benches in the league last season. Now they've add Brogdon, Clarkson, and Yabusele; plus they'll have Mitch Robinson healthy to start the year (he only played 17 games all or last regular season). So that's the biggest flaw that they addressed.
With Mitch healthy, their defense also looked much improved last year. So, that's a second hole they had which should be better.
The other marker for this season being different is that the two teams that have given NY the most headaches both lost their star players for most of, if not all of this next season. Boston lost Tatum and Indy lost Haliburton. That leaves the Knicks and Cavs as the two most proven teams left, and the Knicks have outperformed the Cavs in recent postseason history.