I find these brackets eye sores.

In my CU2, I removed the factory mic from its location near the sunroof switch, and tucked this pioneer mic in the space. Stealth and factory looking.

In my previous car, I tied a cable tie around the mic, and instead of cutting the excess tail off the cable tie, I used it to tuck it into the top of the A pillar. Again, less cumbersome, and much neater.