I played a little with the Templar last night, here is my impressions.
I think she is hurting a lot right now, since its still early and people are running around, not much coordinated.
A lot of her skills (on the Divine Tree), seems focused around that the party stick together within a small area.
I think a lot of people think that the green circle she cast, is really a dot and tend to stay just behind it.
While it is a +%damage modifier and is active while you stay inside the circle.
At least I got 2 buffs on me after cast, one of them stayed active when I stepped outside the circle.
Not sure if they are cumulative, or if there is any way to know that.
I also picked up the Horn of Valor skills, which is another +% damge buff and +% armor.
And good god, that is annoying as hell. It needs to be cast all the time.
Every 18 seconds sounds like were marching for mordor.
On bronze, the buff skills takes too much time to cast,
And I expect on silver and gold, they don't last long enough.
Though I gotto say,
Last sacrifice on stage 5 is an awsome utility.
The moment you go down, the whole team pops to full health.
No tooltip or any way to know what buffs people have, are really bad with her.