I just saw their reasoning on the O-Boards
Word of Glory: We hope Retribution and Protection Paladins occasionaly do the right healing to others, but as we know Paladins sometimes feel that Holy Power is only for the healing. We rather like these specs use more Holy Power on damage abilities, and occasionally heal.
I don't usually have a problem with nerfs if they can be explained well. But this is a ****-poor reason for putting the CD on WoG. Because some fail paladins are ONLY using Holy Power for Word of Glory, they are throwing a CD on it to... what? hint at these people that they should be damaging instead of healing? Does Bliz just want to regulate my entire rotation as well?
If I want to stand next to the healer and spam holy light on my party while everyone hates me or ONLY use my HP for WoG, that's my decision, and I will probably be kicked for it. But I should have the option and right to do so, damnit!
Not to mention, there are other things they could/should do instead:
Word of Glory: We want Retribution and Protection paladins to have reasonable healing on themselves or others, but we know paladins sometimes feel like they can’t use their Holy Power on anything but their heals in some situations. We’d rather these two specs spend most of their Holy Power on damage-dealing abilities, with occasional healing
That's their original statement, right?
Word of Glory: We want Retribution and Protection paladins to have reasonable healing on themselves or others,
As said before: 15k every 20 seconds is NOT reasonable. Even Frost DKs can heal more than that. Blood, even moreso.
but we know paladins sometimes feel like they can’t use their Holy Power on anything but their heals in some situations.
Maybe if healing wasn't so ridiculously hard, then Paladins wouldn't be pressured/encouraged to throw WoGs like crazy everywhere just to prevent wipes (unless everyone's overgeared). Maybe if there wasn't so freaking much Splash Damage, but yet so little AoE healing, maybe paladins wouldn't be spamming WoG.
We’d rather these two specs spend most of their Holy Power on damage-dealing abilities, with occasional healing
Maybe if TV scaled reasonably, so that 1x 3HoPo TV/Shield was the same as 3x 1HoPo TV/Shield (just like WoG) maybe people would use more TVs and SotRs. maybe if SotR actually did decent damage it might be worth more to a tank than WoG. Maybe if TV actually hit for more damage and we weren't REQUIRED to wait until 3 HoPo to use it (using it with 2, or especially 1, is worthless), we'd use it more. Trash packs die too fast for us to build up 3 HoPo and use TV. We can just wait 1-2 seconds and use HoW instead for MORE damage than the 3HoPo TV would have done, and use the 3HoPo to save the healer some mana so we can keep going. If I could use 1-2HoPo TV or Shields, I could spam them every fight, instead of WoGs.