Allow Subnet Mask of 255.255.0.0 and Flexible DHCP Start (Orbi AC3000/RBR50)

My Orbi AC3000/RBR50 has the first three bytes of the subnet mask greyed out and preset to 255.  That means my subnet mask can be only 255.255.255.0 to 255.255.255.252.

My suggestion is to allow at least two bytes of network space.

For example , allow the subnet mask to be 255.255.0.0, or 255.255.128.0.

At the same time, allow the DHCP range to start anywhere within that subnet.

So, for example if my network is 10.20.0.0 / 255.255.0.0, allow me to choose where DHCP starts in that range.  So for instance, allow it to start at 10.20.30.0 and run through 10.20.30.254.

Reason I'm asking for this is that I'm a little picky about assigning my devices on my network to human-readable IP addresses.  It helps me with troubleshooting.

By allowing a full 16-bit network space (with a 10.x.x.x private network), I have many more of the tens and hundreds in the third byte to assign my devices to.

Thanks!