What do you believe the Celtics need, roster wise, to get back to the Finals? Did people 'overlook' the Knicks chemistry/talent?

Knicks are up 2-0 on Spurs, in the #NBAFinals. Did people 'overlook' the Knicks chemistry/talent?
Do the Knicks seem to be separating themselves from the rest of East? What do you believe the Celtics need, roster wise, to get back to the Finals?