Perfectly fine dynamic reproduction of the high range and the brilliance frequency range
Power capability of the system can considerably be increased by voltage dividers and maybe higher crossover frequencies (level attenuations which take tweeters to the level of normal hi-fi systems)
Very light sound of low distortion which particularly improves the stereophony in applications from 5 kHz on
By adding a super tweeter above 8-10 kHz, e.g. even high-quality full range systems can be further improved