The Hornets don't have a need for Gasol, as they have Landry. West should return sometime during the season, likely in the 2nd half.
A backcourt of Jack and Brown would be terrible. Both are better suited coming off the bench.
If the Hornets deal CP3, they're going to want young players and draft picks. The Lakers don't have the right pieces. A third team would need to be involved in order for the Lakers to land Paul.