The amount of healing by holy shock definitely caught a nerf. I'm having to cast holy light in lowbie dungeons a LOT more, but then again, that was probably their intention.
Except that the speed-boost procs for Holy Light provided in 4.0.1 really don't go off as much anymore. Basically, Speed of Light was altered and provides a permanent small speed boost instead of a procing large boost; and so we get less procs and the permanent boost is too small to really help Holy Light.
If it weren't for the T10 4pc bonus, Holy Light would be beyond worthless. I know. I started out 4.0.1 still using T9 (with its non-functional 2pc bonus), and using Holy Light felt like wielding a dead hippopotamus. Only Infusion of Light and Speed of Light (4.0.1) proced at the same time made Holy Light usable. Only the addition of the T10 4pc bonus made Holy Light appear to be of any value (rather than simply be usable). The .4 second casting times I occasionally received made Holy Light a worthwhile spell. Now, in 4.0.3a, we've dropped to the very low edge of usability. Not fast enough anymore and generating no Holy Power on criticals, Holy Light is totally lackluster.
Of course, the T11 set has dropped the speed boost for Holy Light in favor of a crit boost. I don't know what they're thinking, but with the Speed of Light (4.0.3a) change, and with Holy Light criticals no longer generating Holy Power, Holy Light will be so slow and generate so few returns as to edge toward useless. Yet Holy Light is somehow viewed by Blizzard as being a major Paladin healing spell? What? Come again? What am I missing here?
When the scatology has hit the rotating blades and you need to cast a spell every second (or near second) you can't ever push the Holy Light button unless heavy speed boost procs are up, and they are up far less often in 4.0.3a and as gear upgrades come along, they'll be up even less. :(
Yes, I see that Speed of Light works with Holy Radiance. I have even seen Cataclysm beta videos where Holy Paladins praise Holy Radiance. Holy Radiance isn't yet available and I'm trying to heal now. My toon should work in the current environment, not in some future environment, no matter how "close" that new environment is to Blizzard. Pallies have been getting raked over the coals of an incomplete see-sawing tool set for weeks now.
Edit..I was going to mention the 33% healing reduction that they only mentioned once, on a PTR build, but seemed to leave it out of the live patch notes. I can't imagine any single good reason to leave such a significant change out of patch notes.
Blizzard has stated over and over again that not all changes will appear in the patch notes. If Blizzard thinks that this policy makes them look good in the eyes of their paying customers, I have news: it doesn't. In fact, it strongly points to something else.
Blizzard, is there any chance you might want to move on from operating as a CMM Level 1 organization to, I don't know, CMM Level 2 or 3?