Rate limit by MB's for Netgear WC9500

Dear Netgear,

I'm struggeling with rate limits which I would like to configure on a Wifi network which is currently installed at one of our clients.

We're using a Netgear WC9500 in combination with Netgear WNDAP360 AP's.

I've configured  multiple SSID's, one of them is for guests. I would like to limit this SSID by MB usage instead of a percentage of the bandwith. 

This way I can prevent guests from hijacking the entire Internet connection.

please consider this feauture in the next firmware.

regards,

Frank