Before you begin reading, please understand that I'm a PvP healer. Anything I say here in regards to balance is referring to arena. While I feel PvE and PvP are both equal aspects of WoW, I think PvE balancing is a million times easier and less stressful than balancing PvP. Keeping that in mind...
Druids get innervate, priests get shadowfiend, shamans get mana tide, and now paladins have divine plea. Divine plea made it so that every healer now had a CD to blow in order to get mana back. I understand that 25% of your mana back every minute is too good, but this nerf makes it worthless for holy pallies now. Having absolutely no HoTs at their disposal (excluding SoL), how is a pally supposed to leave his partner unhealed for 15 seconds? They might as well move divine plea into retribution, seeing as ret pallies are the only ones who are going to be using this. The smarter choice would be just increasing the CD on divine plea and not having it affect your healing.
Lets look at judgements of the pure. Now lasts 1 minute, rather than 30 seconds. Useless, wanna know why? A good paladin in pve is going to be judging every 20 seconds to keep the debuff on their enemy (justice, wisdom, light), as well as in pvp. If specced the popular holy/ret hybrid healer, then in pvp you'll also want to judge as much as you can for judgement of the wise. If you think this "buff" means you only have to judge once a minute now, then you're not offering your group as much as you could.
Infusion of light now means you get to cast a holy light in the time it would take to cast flash. Not only is this extremely situational, but it's also a huge mana drain. Before, you could use divine favor + holy shock + holy light as an "oh shit" macro as a counter to burst damage. Doesn't matter how much holy light heals for, with a 1.5 second cooldown expect to be countespelled, interrupted, etc in pvp. Not sure if I'm still going to spec into this talent, if I do it's simply because there weren't any other good talents in that tier.
Finally, judgement of the wise. With divine plea now almost useless, this was going to be a pvp holy paladin's one back-up plan, our only way to dynamically get mana back. Many people aren't sure if this is a nerf or a buff, so lets compare this to level 70 stats. At level 70, pallies have 3k base mana and about 12k mana in decent gear. We just went from restoring 2.4k mana down to restoring 1k mana. On top of that, the base mana % cost of seals and jugements have been increased, so you need to account for these mana costs as well. I can't remember off the top of my head, but this comes out to roughly 500-600 mana. Is it useful? Yes. Is it worth speccing 34 points into? You decide.
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Btw, none of those shitty "QQ more" posts. I get it, you're a bad troll who doesn't know the difference between analyzing buffs/nerfs and someone bawwing over their class. Go have a bubble bath with your toaster.