Turning a YouTube channel into a G+ profile doesn't fix it. YouTube channels are often owned and managed by multiple people. A G+ profile is a user identity, G+

Turning a YouTube channel into a G+ profile doesn't fix it. YouTube channels are often owned and managed by multiple people. A G+ profile is a user identity, G+ pages represent places or things. So you'd then force everyone to have a separate G+ account just for their YT channel so that they can share non-personal login credentials with other people managing this. This if anything would inflate G+ profile numbers more.