may be it is a naive question ...
i installed months ago a drivekey: no problem at all running backups.
a couple of months ago i softmodded the wii, running usb loader with all the backups on the usb disk. i am not using anymore dvds. and everything still runs perfectly.
is it there any good point in removing the drivekey ?
I can't think of a good reason to take it out.
Not really doing much Wii stuff these days.