Well if the hash rate drops far enough all that unused ASIC firepower could easily fork the network a million different directions and transactions would take f

Well if the hash rate drops far enough all that unused ASIC firepower could easily fork the network a million different directions and transactions would take forever to get through, I don't think waiting would produce that much more security because the real chain getting mined on the desktops would be a lot shorter than the ASIC mined ones.