An application of AZ-Shear that may show some promise is that it seems to hint at storms/areas which may develop into a velocity couplet. In this example you can see that high Azimuthal Shear values are beginning to be detected by the program, while very little response stand out in the velocity field.

Notice how a few minutes later a velocity couplet is beginning to form, when only a few minutes prior AZ Shear was the only indicator. If this becomes is a trend that develops, it might be able to increase warning times on tornadoes.

South Beach