the replay would really really slow the game down though because we all know that coaches and players always think they're right and the game would probably devolve to the point where a strand of hair glancing a follow-through would be debated
since we're talking about 'game improvements' i think the nba should add a new +/- statistic like the nhl...... if you dont know what im talking about, well, basically, if you're +10 in a game that means that while you were on the court your team outscored the other team by 10, if you're -5.... you're team was outscored by the opposition by 5 while you were on the floor. i think this would be a good statistic in defining some of the intangibles underrated players provide or even amplify the importance of some superstars over others.
and it would also be interesting if 2 assists were given for every point as long as the 2nd assist was around 4-5 (or more) seconds before the point and the first one 1-3. i think it would be a good statistic because firstly maybe it'll cut down some of this me-first attitude because lets face it, a lot of players priorities are money and statistics. but more importantly it would again displays the importance of that guy we dont really talk about, but whom sets up the guy who sets up the guy who scores -- knowing your angles and understanding when to rotate to someone with good passing lanes is essential. the 2nd assist would be a seperate statistic then the first though.