Most of the glider cases are similar to the picture below (that one for a Denon MC6000) .. foam padding .. rigid foam "shelf" that holds the controller in the middle of the case. And a gliding top, with foam under it, that slides over the controller and locks it down for transport .. foam riding over an area with no controls. Without a glider, you'd need more foam in the cover.
Steve Montambault, Copper Sound
Audio - Rane MP25, A&H ZED12FX, Denon MC6000mk2, Denon DN-HC4500, JBL PRX612m, Yamaha DXS12, RCF EVOX 8