NBA Needs to Relegate Worst Teams to Preserve Game's Integrity

As I look at the current National Basketball Association standings, with teams having only two-to-four games left to play in the 82-game regular season, I see that there are still a few playoff spots open for contention in both the Eastern and Western Conferences.  In the East we have five teams vying for the last three spots and two in the West competing for the last spot there.  Here they are, as they currently stand, with their win-loss records:

EASTERN CONFERENCE

#6 Milwaukee (39-40)
#7 Boston (37-42) (wins tie-breaker)
#8 Brooklyn (37-42)
#9 Indiana (36-43)
#10 Miami (35-44)

WESTERN CONFERENCE

#8 New Orleans (43-36) (wins tie-breaker)
#9 Oklahoma City (43-36)

Each day, whenever these teams are playing, their scores are significant as to who eventually gets into the playoffs and who has to wait for next year.  However, some of the games they are playing are against teams that have failed miserably this year and have a motivation to lose, not win, since having a worse record will gain them better prospects in the upcoming college draft.  But if the NBA employed a system of relegation and promotion the way that most of the international soccer leagues practice it, they could have a second-tier league to which the worst teams would be relegated (i.e., demoted) while the best finishers in that league would be promoted to the NBA for the following season.  That way, those teams at the bottom of the standings would also have very meaningful games ahead of themselves that they would feel pressure to go all out and win.

Suppose that the two teams in the NBA finishing with the worst win-loss records were relegated to the hypothetical "lower" league...in other words, the teams with the 29th and 30th positions for the league as a  whole.  Then, this is how their situation would present itself as the season draws to a close:

#27 Los Angeles Lakers (21-58)
#28 Philadelphia (18-61)
#29 Minnesota (16-63)
#30 New York (15-64)

Last night, the Lakers played Minnesota and beat them in a meaningless game (except for the draft), 106-98.  But if "my" relegation system was in effect, that game would have had major repercussions as winning it freed Los Angeles from the prospect of being demoted while the Timberwolves, on their way to relegation, could have gotten themselves closer to Philadelphia in the standings had they won. I'm getting tired of seeing teams giving up halfway through the season, even benching their star players.  Not only are their fans being ripped off, but the integrity of the sport is being challenged as the level of competition artificially slackens off with certain teams...