Like I said, it's very small. I remember noticing it on my mage, where Fireball gained 1 damage every level, or something similar. It certainly applies to Demoralising Roar for Druids, which gains 1 AP reduction per level up to the next rank (which is why people were confused as to the Druid one being 3 AP lower than the Warrior one, while the Druid one is trainable at 77 and the Warrior one is trainable at 80, or something like that).

I have tried to get stats values for the armor and weapons at level 80. For easiness I have calculated all items as being ilvl=200 and all items being purple.

Max level items available in armory has been used as base for the calculation. I have copied their stats into a spreadsheet, calculated its ilvl using wowwiki formulas to find if the formula gets the armory ilvl correctly. After that I have changed all stats proportionally to get the item to ilvl 200. I have calculated value of sockets for those items by applying proper color epic gems into it. So it is to be expected, that for items with sockets, values of stats on those items will be smaller then those presented here.
Spell power value of the one handed mace is in row marked DPS->Spell as main portion of its power comes from DPS sacrifice. Formulas can be found on wiki as well.

Coefficients needed for all selected items to get them to ilvl 200 were in range from 1.25 to 1.35. I interpret that as 30% increase of stats for ilvl 200 as compared to ilvl 146-164. It can in my opinion serve as yet another rule of thumb for players with BT/SWP gear - their stats should be about 30% higher at level 80 after 10 men Naxx.

All values are raw values, that is before the modification by talent coefficients.

I realize that is simplification, but it can give us an idea of the gained stats for the calculation purposes and it is not some theoretical value, but the one derived from items designed by Blizzard.
Here is the wiki link Item level - WoWWiki - Your guide to the World of Warcraft

Shielding tanks should not create any rage problems in 3.0. I have healed heroics where incoming damage was so low I healed almost exclusively with shield, and still the dps were not tearing aggro off the tank, this was without Replenish or Blessing of Sanctuary, on small and large pulls. From everything I've seen between live and beta, threat is just not a thing to worry about right now.

Your totals looked a lot lower than the ones I had been using, which I got from adding up values from items actually found so far on the beta, so I took a look over the approximations you had given here to find one with an easy comparison. Compare to Signet of Hopeful Light from the wowhead Wrath site (no item link because they go to the wowhead main site where the item does not exist). The signet has:

I reordered the stats to show the comparison, but haste rating, int and spirit have the same item point cost, so the comparison works. Your approximation of items stats does not line up with actual items that have dropped, which have consistently higher stats. I don't think WoWWiki's formula is really that reliable. The totals you listed are closer to the totals for blue level 200 items than purple ones.

I agree with putting a cooldown on both CoH and WG, 6 seconds is however very very hefty and will make stacking an issue. 3-4 seconds is more realistic or remove the smart targetting and keep it off cd.

In my opinion, it doesn't make much sense discussing CoH cooldown in respect to beta content a 80, because Blizzard doesn't plan to change CoH and Wild Growth in isolation.

If you watch the discussion (summary of blue answers here: MMO-Champion BlueTracker - Examination on CoH's overuse), it becomes clear that an introduction of a cooldown would also very probably be accompanied by a reduction of raid damage and an increase in single target damage, including changing encounters and modifying tank equipment.

The plan clearly seems to be to prevent CoH and Wild Growth spam while still enabling holy priest and druids to perform a full raid healing role.

Maybe you could clarify how PoM exactly works when stacked (2+ mendings).

Sometimes you can overwrite a mending from someone else, sometimes you cannot and the other priest can't overwrite yours, I suspect its something in the talents but don't really have a clue.

Additionally how does it work when 2 mendings would potentially jump to the same target?

In regards to the debate between SOL and Lolwell/HP. Do either of you have any hard numbers yet or is it all still specualtion? I can easily see the benfits to both, but pure specuation and assuming 20 procs over a 200 sec fight is not a very convincing argument. Especially considering KJ is far more than 200 secs even post nerf. I havent timed it but I'd estimate its about double that. Using that fight as an example though I can see either being incredibly useful. Being able to toss a flash on the move could easily save lives. That being said tossing down a lightwell under the bubble right as everyone collapses could help mitigate that one jerk spreading fire and help healing up the damage taken from the aoe. Honeslty I think it comes down to the proc rate. Sure there will be times it is wasted, BUT the one time it saves your own life or someone elses it makes up for the 5 previous uses that were over healing/missed. The CD on Lightwell still only makes it situationally useful IMO. 24 free flash heals throughout KJ is potentially saving your raid. Dropping the lightwell will buy you a little oo5sr, but I think I've Oomed on that fight once and it was terrible luck with the mana burn and getting no regen breaths from the dragons.

In our particular case we'll probly have one of us spec'd each way. With me paying attn to Ora and other officer responsibilities mid fight I'll probly take the Lightwell/HP approach as its more "fire and forget" if you will and let Ikasha deal with micro managing procs. Regardless as soon as someones able to get some comparative wws parses I'd be interested in seeing them. And as others have said thanks Nidiba for the awesome job.

To be honest, I'm not sure exactly sure what hard data you're looking for that would convince you either way. SOL is tied to your crit rate. That means that its effectiveness is tied not only to the particulars of your spec, but also to the type of fight you are in and the types of spells you cast. Right now, I almost always get a SOL proc whenever I cast COH, whereas when I'm chain casting gheal, its a less frequent occurrence. Further, the number of talent points you have at 80 makes it very easy to pick up both lightwell and SOL without sacrificing too much. The tradeoff is more throughput on your base spells, for situational tools that increase your mana efficiency and/or allow you to do multiple things at once. Even if you could model it, it seems to me to come down to a personal choice and playstyle issue.

I need an explanation on this please. Tooltip says that chance for getting SoL is based on crit chance of FH, GH and BH.

It's Holy Concentration that's limited to FH/GH/BH.