In all fairness to the Kings, you could look at almost any roster of any team's final game and not recognize the team. Because that's just what happens a lot of times. The regulars sit, while the youngsters are thrown in their to give them minutes, and experience, and something to talk to their kids about during dinner, or before tucking them in at night.
And, unless you lived under a rock during the previous 81 games of the regular season, the Kings' roster in game 81 really shouldn't have looked all that different.