First off Alaocia you frankly need to calm down and even apologize. We are a small enough community as it is and attacking the few communicative and dedicated members of it is not a wise attitude.
If the shrine being raid wide is overpowered honestly comes down to the point of view and luck of its user. It dies alot to AoEs, it has a limited range as well. And where it really boosts hps on a parse if thats what you care about is when its applying it ward to lots of choker wearers. Which is common in some raid forces.
It was intented to be made raid wide, there was a patch note about it. It was done to make it in line with the Healing Grove, the Fairy, the healbear etc. Unfortunately the change to make it do so also effected other abilities because it was a mechanics change. It caused Coercer's channel to hit raid wide, which was completely unintended.
They are working on making changes to mechanics to fix these and other issues such as the warden epic restoring power to the target instead of them atm. Apparently for the time being they have decided to revert the change. Not because of how it improved the spiritual shrine. But because the unintenteded changes needed to be reverted and right now the only way to do so was to change back the mechanic which of course returned the shrine to its original state.
Hopefully down the road after they make the changes to the game to allow them to fix such issues they will remember to change the shrine back again. But most likely will require alittle reminder 
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*edited to spell Alaocia's name properly*