Quote Originally Posted by Buffalobiian View Post
Lucy isn't readily about to serve the "game masters", so assuming they want both a backup and a sample, then it makes sense to use Lucy right away while Yukino is stashed aside for later in order to lower your risk of losing these precious celestial wizards.
Perhaps, but by using an actual willing participant you are able to sidestep a couple of fairly enormous hurdles. Like, her resisting. Her trying to escape. Her insanely powerful friends coming and kicking your ass. etc.