I got a question on my ToR build post about the change of LoD and the best use of Holy Power considering it. Just quoting a part of the question "I am getting mixed input with WoG vs LoD and which to use".
Light of Dawn has changed recently from being a fixed strength heal on a 30s CD to being cast with Holy Power and without CD. One important fact to keep in consideration is that is still activate Holy Beacon (though it is not sure this will continue).
This change has two important consequences.
First LoD is not as bad as before, with a 3 HP stack and reasonable spellpower it becomes a strong aoe (cone) heal, not far from 10K / target affected. The position issue remains, and it is still a bit situational, but if you can manage to get two or more people in your cone (plus you) it is now a strong healing output ability.
Secondly, Holy Power now has two uses, Word of Glory or Light of Dawn. Obviously the uses are very different, one is a single target strong heal that can benefit from 2 talents (Eternal Glory and Rule of Law), the other is a raid healing ability that only benefits from its own glyph.
From my point of view LoD has always been very situational, but this change makes it strong enough to be valuable in situations like infest heals in a Hard Mode Lich King fight, it wasn't strong/reliable enough before. I am still using an Eternal Glory / Crusade talent template at lvl80 for the reason that I find WoG invaluable when a quick strong heal is needed, which happens to be what I'm the most useful for at the moment (I raid with resto druids and damage spikes are the only thing they can't deal with much better than me).
But I wanted to get inputs for the future, so I went to look at some parsing for good raiding guilds in the last days of the beta (when this change was pushed and before beta was turned off). Here are the results.
There seem to be two "templates" for Holy Paladins now.
The first template is a tank healer based on the TOR build & rotation for mana efficiency and spike management. You will do a little bit or raid healing with Holy Shock and Word of Glory from time to time, but most of your heal will be on your tank. LoD will only used in very specific occasions, when the raid groups up or on the melee group nearby the tank, if you use it properly with Beacon it will also be a spike heal on your tank.
The second is based on LoD "spam" for raid healing, this will require you to move often to position as efficiently as you can, your Beacon should be on the tank at all times to use LoD Beacon proc. You will use a Divinity template as you'll nearly never use Word of Glory.
Both of these templates have been used in lvl 85 raids and are efficient enough for me to mention them, the first one seem to be the most efficient, close to the output of resto druids (which are still very strong despite the various nerfs they got lately). But I think this is due to the fact that a LoD build is harder to master and requires getting used to. You'll need to move a lot and depending on your position the number of persons you will affect with a LoD will strongly change your hps. Moving speed boot enchants are advised, and don't forget you'll main HP source will still be Holy Shock on a 6s cooldown, keep crusade for that.
We'll have to wait until raids are live for more inputs, but at least this give us a choice of spec and not only one direction and gameplay to focus on, which is always good.