Originally Posted by
harky
Fully talented with 4k SP w/ raid buffs:
Renew - Heals for 2,012 instantly, crits for 3,018, then 13,415 over 15 seconds.
Flash Heal - Heals for 7,075 average, crits for 12,112 average.
Flash Heal with no SoL and 35% Holy Crit averages out to 8,837 per cast fully talented. That means 5/5 Emp. Healing, 3/3 Blessed Resil. To get this and proper raiding talent it requires going 59 points into Holy. This means that you will never see 5/5 Emp. Healing and 3/3 Blessed Resil in a solid build. Still, that's the potential output. Renew with the same stats will heal for 15,779 average. This makes Renew just less than twice as much healing per cast at 78% more healing per cast.
In terms of which spell is stronger, Renew wins. The mana cost is close enough that it's a non-issue. Renew specs are not because Priests want to be Druids, it's because Priests want to get use out of their best filler spell.
Anyway, if people aren't dying, it's fine really. Flash Heal is much weaker than Renew when used properly and there's no getting around that, but depending on how many healers you have and what content you're doing it might not matter. Just think about fights sometime and try to really figure out if someone is at risk or not. Does the extra 4-5k heal from Flash Heal right now matter in the long run? More often then not it doesn't. When it really matters you won't be using Renew, or Flash Heal. When things really get bad the filler spells go out the window and we pull out PoH. The issue a lot of people have is they confuse the very needed 'renew' and 'Flash Heal' distinction from builds as meaning that the play-style is very different. The truth is they play almost identically. One uses Flash Heal to fill gaps, one uses Renew. Renew is much stronger for pure raid healing in 25s. Flash Heal has a decent place in 10s (due to needing to tank heal). It doesn't make you a wannabe Druid at all, it just means you use a HoT when CoH, and PoM are on cooldown and PoH isn't needed.