It rise privacy concern for me.

If real name and email validation is mandatory, I will wonder what Google will use that data for. Is that some kind of monitor tool which want to know REAL NAME, EMAIL ADDR whenever you want to use a website?

Don't forget Google always beg for your telephone number for "security reasons", Google+ wants your real name for "Policy reason", I upgraded one of my Nexus to Android L, and everything I do has to sign in: some game(Botanicula for instant) work fine without internet in Android 4.4.4 but requires internet signin in Android L.