I dropped my t10 4 set bonus.. in my opinion having better stats in 277 pieces are far more valuable then 0.3 faster holy light which with regular procs is fast enough. Instead, I invested in some spirit and focused more on a FoL, HS, HL rotation.

I was beginning to really like the new Lay of Hands but Blizzard probably has their reasoning.

IMPORTANT:

I think Druid healers can make amazing tank healers.. 3 dots that basically keep the tank up and an occasional single heal to make sure the tank is topped off. And regarding Paladins, FoL is great for raid healing.. as long as you have the reflexes to FoL, HS fast enough across the raid.

The numbers given (0.3 seconds) aren't actually accurate.

It's really a scaling haste number, which gets worse as you get more haste from gear. The T10 4-piece has essentially always been awful.

Oh, it's perfectly accurate. It's just that like all bonuses like that, it's counted before haste. So if you've gotten to the GCD haste cap (50%), the 4t10 is only taking 0.2 seconds, net, off your Holy Light cast time. Which was far more useful when Holy Light was a much more powerful spell.