What are the advantages of a line array design?

Each driver in a line array has less distortion because it shares the load with the rest of the drivers in the line array. Some of the best and most expensive speakers are line arrays. It is a very good technique to insure low distortion at high decibel levels. shay

...a given mediocre driver maker has the opportunity to make lots more money??? ;^)

Big, dynamic sound, and great bass response are some advantages. Small rooms need not apply