Oh yes I know mate, I just wondered if you had any idea if it would be a feature that would be implemented again? I can overlock via SSH although I am not sure if its genuinely running at those speeds. Obviously with a reboot the overclock goes
Setting the clock over SSH should survive reboots (in fact it must, since the clock is only set at boot time).
If you are referring to the Turbo button on the RT-AC68U, the change lies in the bootloader, not in the firmware, so there's nothing that can be done at the firmware level.