Rite of Passage - The only other class that approaches this ultimate for defensive / restorative purposes is the Nightblade with Soul Siphon. I love Rite of Passage. It's cheap and a great "Oh-****" button for healers and tanks alike. I prefer the Remembrance morph, as it generally provides more healing than is required as-is, but maybe somebody can find a use for Practiced Incantation. I sure can't. Well, I guess I never tried, but that's not for lack of theoretical application.
Rushed Ceremony - Another great ability with a few minor drawbacks. First off, it's expensive. It isn't the most efficient heal. That is save for the Honor the Dead morph. Honor the Dead is a great and efficient option to heal individual targets if you don't have to cast it in rapid succession, as the restoration of magicka does not stack. I keep this on my PVP and PVE bars. It is less reliable in PVP as a self-healing mechanism because it will prioritize lower health targets, even if you need a do-or-die heal for yourself. I keep multiple heals on my PVP bar, some specifically to address this shortcoming.
The Breath of Life morph is nice as well if you need multiple-target bursts. Breath of Life fires off two smaller heals the instant you hit the button, which takes a bit of getting used to, as the primary heal takes a split second before it casts. This means you get the two small ones before the large one, which can be annoying before you become accustomed to it. You will cast it expecting a large burst heal for the lowest health ally but see two others healed prior to it. It only fools you into thinking the second heal was delayed, but it takes the same amount of time as the base spell or Honor the Dead do. Not a real problem; Still a great spell.
Healing Ritual - Here's a spell I struggled to find a good use for. The cast time ruined it for me in dungeons, where I try to split my role between healing and support, and I need to trim the fat on APM. It also didn't help that I had to be positioned well in order to make it effective. When I do PVP, I play a combination of single-target killing and large group healing. This is where I found a good home for the spell. The large bursts couple well with the chaotic nature of PVP. It is also almost unique in that it is the only efficient, large heal I have that will heal me every time I cast it, even if nearby players have lower health. I don't count Cleanse as a similar guarantee it is too expensive and has a prerequisite to be able to heal me. I also mentioned HR is efficient. It is a bit pricey but the cast time allows regeneration ticks, effectively reducing the cost in a round-about manner. The large healing values more than justify the cost if you cast it at a good time to cut back on overhealing.
While I like the spell, the morphs are a bit lackluster. Ritual of Rebirth barely reduces the cast time. I figure if I'm relying on 0.3 seconds of cast time reduction to save me, I'm screwed already. Lingering Ritual is weird, but it is what I chose. The heal value is small and 8 seconds is an eternity to wait for such a minor heal, with nothing happening in between. I'd rather see RoR reduce the cast time to 1.2 seconds and have LR's heal value increased by 50% but broken into smaller heals over an 8 second period. Right now, you may as well flip a coin on this morph.
Restoring Aura - A pretty cool ability. It's always nice to have more stamina regeneration. I don't care so much for the health regen, but the stamina is great for everyone. This ability and the Radiant Aura morph are much more useful since the caps were boosted, but it still doesn't compare to Repentance. Sure, Restoring / Radiant can be used any time, but it takes one corpse to equal a lifetime of having the base spell active. It is for this reason that I still have to go with Repentance over Radiant Aura. I think Radiant aura would be more effective if it provided better passives as well as the increased range, since the range buff isn't that useful. Perhaps add 15% magicka regeneration to the passive aspect of the spell.
"I thought casting Repentance here would work."
Cleansing Ritual - Oh, how I love you, Cleansing Ritual. Not only do you provide synergy opportunities and a mild boost to healing, but you provide a designated safe zone for my party to stand in. It's subtle mind-control that proves us healers are really the ones in charge of dungeon groups. This is to say nothing of the PVP benefits.
Both morphs are great here. Purifying Ritual is invaluable in PVP and I honestly feel sorry for other classes because of it. Spam talons all you want and I'll just pop right on out. Dots on me? Get that crap out of here. Then there's extended ritual. More of a good fit for PVE. Set it and forget it.
Rune Focus - I like this one too. It's pretty cool for select situations. Worthless in PVP, however. It is nice for a squishy like me to take on bosses or provide spot tanking. It is a selfish spell, as it only affects the caster for the armor / resist portion. What also helps this spell is the fact that it is one of, if not the cheapest Templar spell.
Channeled Focus sucks. You would think magicka regen from the focus would be nice for alleviating the concerns of Templa magicka management, but it is not. It just returns the base spell cost and a little more. It would be nice if the value was doubled, or even tripled. As it stands, Restoring Focus is much better. I believe it even applies the healing increase to allies.
Update: If the reports that Channeled Focus restores more magicka than it says are true, it might be more useful than I imagined. It also turns out it restores the magicka whether you stand in it or not, which is a big bonus to the effectiveness.
Passives - The first two are great. They help out a lot with Templar healing. Focused Healing just flat out buffs Healing Ritual itself, which is an addition to an already fantastic spell. I don't have a whole lot of use for Light Weaver, as you may have been able to surmise with my opinions on the affected spells, but it is decent. Master Ritualist would be great if it wasn't bugged. I counted 10+ revives in a row with no gem return, which is an extreme mathematical improbability. 0.097% for 10 failures in a row.