Yesterday's patch nerfed the practice of libram-swapping. Basically, you could macro a command to switch librams to the command to cast a spell, and get the full benefit of the libram. So you would bind a Holy Light libram to Holy Light, and a Flash of Light libram to Flash of Light, and you would get the full benefit of your libram slot for whichever spell you cast.
My response to the nerf is: Good! Libram-swapping was a lame hack.
Librams are designed to be powerful but specific. You get a bigger bonus than normal, but only for a portion of the total time. This makes gameplay interesting, as you try and shift your gameplay to maximize the use of your Libram. Rely more on HL if you have a HL libram. Tank heal if you have the BoL libram.
If you wish Librams to be more general, they're going to be weaker overall. That's just the way balance works. Swapping Librams with spellcasts allowed paladins to get all the bonuses of a libram with none of the drawbacks. This was not intended, and would have just led Blizzard to make weak, general Librams.
To see what I mean, compare [Libram of Souls Redeemed] to [Blue Diamond Witchwand]. They both drop from the Opera event in Karazhan.
The wand gives:
The libram gives a Holy paladin:
+125-150 Healing but only on targets with Blessing of Light
The libram healing bonus is significantly higher than the wand healing bonus. The drawback is that it really only works when healing the tanks. Given that the tanks are the ones taking the big hits, I would much rather have the specific libram than the general stats wand.
Specific librams are more *interesting* than general librams. They give us something to discuss, to theorycraft about, to make decisions about. Making decisions is what makes games interesting. Going from a +10 healing libram to a +20 healing libram is not an interesting decision. It's an obvious one.
Most of the other equipment slots are general, boring, and obvious. (Trinkets are a notable exception.) One slot dedicated to a new model of itemization is not too much to ask.