Unable to block or ignore Realms invitations

As a parent, I feel that it was a drastic oversight to not offer some kind of functionality to the game client that would allow me to disable my child from receiving Realms invitations.

I allow my child to play on one specific, moderated family-friendly multiplayer server, but with the Realms addition, anybody can invite him to a Realms server, where no moderation takes place and anything could happen or be said.

Please address this issue by adding a parent password-protected option that would allow me to prevent my Minecraft account from receiving Realms invitations.

As a corollary, it would also be nice if I could prevent my child from adding or direct connecting to a server.

Thanks.