I was disappointed in how the team came out in the first two games, but Isaiah was significantly injured and then missed the last 2.5 games of the series.
The Cavs had the best player in the series by far and were much healthier. They're also a significantly better team overall even when both are at full strength.
The Celts are another player or two away from competing with the Cavs, but it was a good season.
Also, I'm pretty confident the Cavs are about to have their lack of defense exposed in the Finals. So there's that.