Without the Gasol trade LA could have easily unraveled completely. Yes, I know they were in 1st at a point prior to the Gasol trade, but lets look at the time of the Gasol trade. Bynum was down with what turned out to be a season ending injury. They played 10 games in between Bynum's injury and the Pau trade, in those 10 games they went 5-5, so without the Pau trade, LA is roughly a .500 team for the remainder of the 2007-2008 season since they would have neither Bynum nor Pau.
They won 57 games that year. The 9th seed in the West, Golden State, won 48 games. They went 27-9 after the Pau trade. For hypothetical sake, lets say they go 18-18 instead of 27-9 after the 30-16 start, that would mean they're tied with Golden State for the final playoff spot.
What I'm saying is, LA had a very reasonable chance at missing the playoffs entirely in 2007-2008 if the Pau trade never happens. Who knows how Kobe reacts if that happens. It could have very well triggered him making a serious trade demand.
I'm not saying this WOULD have happened if not for the Pau trade, just saying that the Pau trade could have very well prevented a disaster.