Most priests don't use this talent, and I haven't either. The only time I have was when I was trying out shadow for a while (it was as boring as it has been since vanilla btw) and found I had a couple of points left over of which I didn't really knew where to put. In hindsight I might've put them into silence instead, but I didn't. But when healing as disc I really find myself missing Body & Soul. This could either be because B&S is a great talent, or because it is spoiling me with it's comfiness. Whenever I have to move anywhere I use B&S. IS it making me dull? Am I relying on it too much? Or is it just a really great talent for a healer? A little bit of both probably. Thing is, disc healing is more punished by movement than holy healing is. As disc we've got the shield and PoM on the run (and holy nova occasionally). As holy I have PoM, Renew, CoH, Serenity when in the right stance (and holy nova of course). My best heals - GH and Penance - require me to stand still, so as disc I would benefit even more being able to position myself quickly. I am tempted to try this talent out, question is if it worth all those talent points. So far I have been leaning towards no, actually the answer has been simple. It just aint. And I still don't think it is. But I am tempted nonetheless.
Strength of Soul
Word about Blizzard changing SoL to work with Flash Heal and Greater Heal immediately made me think about this talent. One thing I've noticed when healing as disc is that I never use Heal. Maybe I'm doing it wrong, but at the moment I am healing mainly with Penance and Greater Heals for Train of Thought. It's working really well, so I can't be all wrong. I don't get anything from using Heal, except it's fairly mana efficient (but so is GH with ToT). Talents like SoL and Strength of Soul seemed aimed towards the wrong spell. You could argue that SoS gives us a reason to use Heal, but I'd rather have talents that buffed a couple of spells, instead of having talents that buff all my spells slightly. The more synergies the happier I am, and so far Disc has had a couple of these that work really well. I really like the way I can combine shield+GH+smite+Penance for nice throughpout when used in the correct manner. Where am I supposed to throw in Heal in all of this? Heal is too weak for disc to use. As holy we have 10% crit chance on it, can maintain renew and get Serenity from using it. Disc has none of this. Instead with SoS we get less crit (since it counteracts Borrowed Time) when using Heal. I can tell you that in a raid environment Heal is way too small to be effective when disc healing. Greater Heal works splendid though so I am glad they're changing this. I'm still not sure I want to use the talent though.
Some people say you should use it, some say you shouldn't. I thought I had read somewhere that keeping it on the tank could at least be an idea since it would keep up Grace on the target. Don't know if I just dreamt it, because it doesn't work for me anyway. Renew does not stack Grace. In any case, some say that we should use Renew since, like I mentioned above, when we're on the run there isn't much else for us to use. I suppose casting it could be better than letting people die while you have plenty of mana, but it seriously doesn't heal much, not even with Improved Renew. It's not even that great for holy, and I mostly only keep it on the tank anyway (when holy). Renew has definitely fallen a long way from the awesome spell it used to be. It feels like if we're ready to use non-mana efficient skills just because we have to, shouldn't we be reaching for Power Word: Shield first? It does actually cost less, and in disc spec my shield will "heal" for more than my renew when glyphed. Talenting Improved Renew does yet again feel like scattering points over too many skills. We should try to focus our points towards the skills we use the most as much as possible, and I think using Shield over Renew still is the way to go as disc.
This is a great talent, and as disc we crit fairly often. Getting inspiration up on anyone but the tank is rarely necessary, so question is how much of a difference this will do on the tank? It is true that disc healing is best at tank healing right now, so buffing that does sound like a good idea. But where would we get those points from? I do feel like mana is more of an issue when I am healing as disc than holy, so I don't want to pick points from MA, especially not if I intend to use shields even more. On the other hand shields is basically the only thing that benefits from MA (I don't really count the few PoM I use). Removing points from Darkness or TD would gimp my overall healing, so one could wonder if I'd gain much from Inspiration then. Maybe, if we plan to throw more shields, we'd need less haste because we'd have the Borrowed Time buff up even more. But will our mana pools hold for that? Removing Darkness does reduce our healing throughput by quite alot, especially since disc is so much about cast time now.There are definitely some very tricky choices to make for those last talent points. I suppose testing is the best way to find out what will work.