Holy/Blessing of Sanctuary. Heals-Off Tank

Hi, interested in the concept of a tank/healer as the paladin was originally conceived, I made this build:
http://db.vanillagaming.org/?talent#sVxubgkxEMxc0z
Essentially the goal is to be still an adequate healer, in spite of lacking Holy Shock, and to spec enough into the protection build to give the tank Blessing of Sanctuary, as well as be able to tank enough damage at early levels (perhaps do dungeons as tank for easier groups). Might come in handy later on if the warrior dies and I have to cover in for a moment.
I originally also had Blessing of Kings added into the build, but realised most other Holy Paladins are going for that one already anyway being an 11 point talent. However if you think it should be taken, post it here. Right now I'm leaning for using Guardian's favor for protecting a party member and better root immunity.
I welcome suggestions and feedback. Should I have chosen anticipation for more defence, or threat improvement? Or Kings?
Let me know.
http://db.vanillagaming.org/?talent#sVxubgkxEMxc0z
Essentially the goal is to be still an adequate healer, in spite of lacking Holy Shock, and to spec enough into the protection build to give the tank Blessing of Sanctuary, as well as be able to tank enough damage at early levels (perhaps do dungeons as tank for easier groups). Might come in handy later on if the warrior dies and I have to cover in for a moment.
I originally also had Blessing of Kings added into the build, but realised most other Holy Paladins are going for that one already anyway being an 11 point talent. However if you think it should be taken, post it here. Right now I'm leaning for using Guardian's favor for protecting a party member and better root immunity.
I welcome suggestions and feedback. Should I have chosen anticipation for more defence, or threat improvement? Or Kings?
Let me know.