AX8 Smart Connect force 5Ghz

Hey, I don't think this is a featuire year but is there any way we could put in a request to have smart connect enabled and then force certain mac addresses to always connect to 5Ghz. Even my router from my ISP had this feature. It's useful for people who want the piece of mind of one SSID and always getting the best signal but also to manage some devices (I'm looking at you google home/nest products) that work better when connected to the same network. 

Thank you,