Easier and more delicious for you, maybe. But for them it's basically like cutting their revenue by 90%. It's not going to happen.
I think it is unreasonable to think that they are ever going to let the shares be on a per-game basis. It's likely going to stay at a library/group-based. It is reasonable (at least in my opinion) to hope that we have control of this shared group and can decide ourselves which games we'd like to be in it, instead of having no choice but to commit either zero or all our games to share with family members. This is also related to sharing games with your kids and not allowing them to play the MA-rated games.
This initial setup of Steam Family Sharing is simply just like sharing your account login and password without actually giving your account login and password, with the bonus disadvantage the inability of playing games off-line without affecting the other user.