Eh, NBA history shows that most of the time there are a handful of elite teams that tend to dominate for stretches at a time. The Celtics have had a few dynasties, the Lakers and Celtics were the main team in the '80s, Jordan and Co. knocked off the Bad Boy Pistons and ran off 6 championships (with an MJ intermission for Houston to take a brief turn). More recently we've seen dominant teams in San Antonio, then the Lakers, and now we're back to the Lakers and Celtics. The NBA is typically like a game of King of the Hill and the times when there is relative parody is the exception to the rule. Miami will now give the Hill a run, though if they can dominate still remains to be seen (I'm sure most will think they can). The NBA seems to be at its most popular during the times when there are clear dominant teams, like during the 80's renewal in popularity with the Celtics-Lakers rivalry, and the unrivaled surge of new fans during the Bulls dynasty. It seems like whether or not we like Kobe, he has also been really good for the game's popularity. So it seems to me that Miami isn't really starting a trend. They more or less copied what the Celtics did just a few years ago when they got Ray Allen and Kevin Garnett. The only real difference between these recent Celtics and Heat moves is that they talent is coming mostly from free agency. While the dynasties in the past have had some free agency impacts (such as Wilt Chamberlain going to the Lakers, Dennis Rodman signing with the Bulls, etc.), those older teams were typically built mostly with draft picks or over time, not in one big splash. I think that's where the NBA will looking at rules to see first if this is adding to the profitability of the game, and second if they could change the rules to stop the free agency issues if they think they are a problem. My guess is the NBA will not change the rules for free agency since they're making a ton of money on it. Just look at how much interest the whole LeBron thing was and how many folks are talking about the NBA during the MLB All-Star Game! My feeling is that even if they humor Mark Cuban and investigate the Heat for rules violations, nothing will come of it since Stern probably likes the results of all that went down.
Don't ask what sort of Chunks they are, you probably don't want to know. Blowing Chunks since Season 4!