So, I've only had one fight experience so far on beta as I just came back and expect to be maining a hpaly next expo despite this thread making it sound dismal (MW look terrible, but thats a different story for a different thread). I'm pretty sure we were overhealing, however my tank healing was 2x higher than the druids on a single tank, and including the second tank was 3x higher. Comparing to any other healer (than the druid) it was on a completely different level. This was with illuminated healing doing 19%~ of my healing. It's possible this was a fluke since both tanks were tanking most of the time so double beacon was extraordinarily effective on the twins. In any case, my experience was the exact opposite of what you referenced, or specifically that holy paladin's "tank healing is the shitiest".
I found the healing style to be reminiscent of monks in early 5.0 patches, in the idea that you benefit from storing 5HP before burst damage etc. As such, I thought the healing was pretty fun. Not as complex as 5.0 monks (most fun class ever), however comparing to what I hear from a lot of other healers, its not particularly "simple minded".
@Jackielope: in reference to wanting an "active CD", I would argue that Hpally have the most unique "active CD" in the form of AW (esp. in its current form...it's ridiculous: nearly 300% healing increase). Not only is pressing one button and then standing there basically AFK for 8s the exact opposite of "engaging gameplay" or "fun" (in my opinion), but it is the exact same type of healing that every other healer has. AW gives us the niche of having extremely strong healing for 20s, the entire duration of a long AoE phase, as compared to just being able to try and pick up a raid. If you're desperately in need of huge burst healing like the other classes have, then pop holy avenger and AW 8-10s before a "10s burst window" and then with 3HoPo EF's on 5 targets + your 5 extra EF's (or LoD if you need front-loaded instant healing, but I still think EF keeping the lowest people alive is superior in these cases) during the burst window and holy prism/lights hammer, and I'm pretty sure you'll have similar healing output as every other healer using their own burst cooldowns [except with more prep/buttons, but personally I find that more fun anyway.]
TLDR: I thought hpally was enjoyable. I don't see/agree with the "doom and gloom" the majority of this thread has expressed, and as such thought I'd share my opinion.
Edit: I do think that EF/LoD being a cast time is very stupid from a player standpoint, esp. since it used to be instant. On the other hand, it would make our on the move healing pretty dang strong (other than the fact that we still have pre-shielding/HoT's AKA EF, as well as divine shield.) Combined with the utility that the hand-abilities bring, and I can see why blizzard thinks hpal would be too mobile/useful as a whole with instant LoD/EF. (I don't agree with it, but I also don't agree with how they gutted other classes. I can kind of understand why they did it though.)