I have had my Templar healer as my main since I've been playing, and for the most part I am indifferent to the changes. The nerf to Breath of Life, I really don't feel anything towards this spell and if you use this as your main heal, then you are healing wrong. I always thought of Breath of Life as that oh *** emergency heal between other heals.
What hits me hard is the 25% nerf to Healing Ritual. Sure we get 25% less cast time, but compared to a 25% nerf off the top. This was my main heal here, other than what healing I do off the Resto staff which is quite a bit as well. But now I have to basically cast this heal twice to ensure it has the same effectiveness as one heal it used to do.
Focused Healing got nerfed pretty hard as well.
Currently I am leveling a Tanky DPS Stamina DK, because if the changes go through and I find it directly hurt the way I healed tremendously, my Templar is gonna be retired. 25% man... And then you gut Focused Healing as well... I will try it out, but I'm pretty sure I won't like it.