This is what I have been working on for fun, ignore the shadow tree (copy of someone else's template so I don't have to fill every talent in), and the discipline tree (wip). As for the holy tree, I'm screwing it up but more specifically, take a look at my lightwell and its sister talent. I'm still contemplating whether to create an entire different well for that sister talent (lightwell for heal, improve lightwell for mana) but it might not work that well, ie. too OP, and if you can only summon one well at the time, it has its limitations. The idea is since so many non-priest have no idea how to use the lightwell, we can make it into a raid utility bot instead of a healing hot, since it's often over healed by healers in the raids anyway.
ps. please don't flame me, it's not balanced, it's not practical blah blah blah, but I was bored so I thought I play with talent creation for fun.