This team is in their very prime, and their window of opportunity for titles is very long, considering Xavi is the oldest of the young trio at 31.
Right now, the trio of Messi, Iniesta and Xavi have won three consecutive La Liga titles, two European Championships. Their crowning achievement is their treble season in 2009, and were it not for a late winner from Cristiano Ronaldo in the Copa Del Rey Final, Barcelona would have earned another this year.
With the rise of Jose Mourinho's young and extremely talented Real Madrid squad, Barcelona's stranglehold on Spain may begin to loosen. While the Barcelona team is seemingly superior, any number of circumstances will tilt the scale of power to Real Madrid in at least one of the three major competitions, making a second treble seem not as automatic as some Barca fans would have you believe.
Their reign over Europe is likely to continue, while Real Madrid may snatch a Spanish title or two over the remaining years Xavi plays. However, the dominance of this team and the brilliance of Messi, is so incredible that I will project at least another three La Liga titles, an additional Copa Del Rey and three more European titles. Bringing their totals to a staggering six La Liga titles, two Dopa Del Rey and five European titles. That goes without mentioning the pending run of FIFA Club World Cup scrimmages.
I will never forget LeBron James counting his championship dreams to over seven NBA titles with Bosh and Wade. Were they to accomplish this, they would be regarded as the best basketball trio, ever. This is their first year together, and I do predict they will win this year's finals, and they will likely have another seven to eight years playing together—the last half of that will include a thirty year old Dwayne Wade.
This will make winning over seven titles very difficult and very unlikely. However, LeBron James has passed his "superstar" phase and will become the leader of a championship team, which must be scary for the rest of the NBA.
Teams like the Celtics and Lakers will not be heavily competing for championships after the next three seasons, and the Bulls must vastly improve their defense if they hope to challenge the Heat for the Eastern Conference. Much hangs with Dwight Howard's free-agency decision after this season. If Howard joins Chicago, there will be a dangerous challenger for the remainder of the Heat's championship prime. Of course, with the Heat having room in their salary cap next season, it would be possible for the Heat to acquire Dwight Howard if the current big three were to restructure their contracts.
But with James about to enter his prime, I will bet no less than six NBA championships, with an extra finals appearance or two.
If the Heat win six championships, or more for that matter, it will cement their place alongside the greatest teams in NBA history. Barcelona has already placed their name in the long list of incredible attacking sides over football's long history. I assure you, both of these trios will carry an insurmountable legacy once they are broken up.
However, the NBA championship is essentially the champions league of basketball, and with the spotlight of the World Cup altering the public's opinion on each of the three players, poor World Cups could shadow the mystique of each player's legacy.
I do not see that happening, and while it is worth noting how considerable the legacy of the Miami Heat will be, Barcelona will ascend to a level not seen in this generation, regardless of the vacancy of a World Cup title for Lionel Messi.