Feature Request: AC1900 Wifi Extender - Add MAC Filtering

Suggest that for a future firmware update they add MAC filtering. For a product in this range, I am very surprised they do not support MAC filtering.  I replaced a lower end product with the AC1900/Mode EX7000. Even the lower end WAP support MAC filtering.  It is such a common capablity for this type of product, I did not even check.  I was very disappointed to find it was not supported