I hope your open to constructive criticism, because you’re not playing the spec as well as you could be by a large margin. From your logs, you arn’t doing much else other than pressing flash of light and holy light. In particular I’m looking at your 11k hps heroic vectis run from vectis (I’d provide a link but I’m not allowed). I’m not going to pull apart your build, but I just want to mention that there are better talents to be running.
You need to be using holy shock basically on cooldown, or at least doing your best to not cast flash/holy light when you could be using it instead. It’s faster to cast, and makes your FoL or HL better, this is especially the case if you’re running holy avenger and sanctified wrath which reduces the CD by 30%+ and 50% respectively. To be blunt, you were not doing this (you casted it 10 times when you could casted over 40).
You should also be using Light of Dawn pretty much on CD, instant cast for a 5 man AOE heal. It’s expensive but that’s why you’re using holy shock on CD which is very easy on mana consumption. Vectis always has 2+ people taking damage from omega vector, and the tanks taking damage making light of dawn pretty much always an effective ability to use as it in total heals more than both flash of light and holy light when it heals 3 targets. To be blunt, you didnt cast this once. Also, try not to over heal with it. On your heroic fetid kill, 70-80% of your healing with it was over healing.
The class can output just fine, its a different playstyle and requires a lot of attention/muscle memory to use the core healing spells on CD.
Now is it fun? Well… That’s subjective. It’s awkward in a lot of respects, but that’s because it isn’t meant to be played quite like a traditional healer. Avenging crusader and judgement of light heal for a lot and require you to transition from standing back and healing to dpsing, it can be a bit awkward. Moreover they don’t have smooth healing, it’s all bursty so unless the raids getting hammered you can feel kind of useless. All that aside I actually prefer my hpal to my monk currently, it has more minor CD’s to watch and has a lot more utility. But that’s just my preference, I still think a lot could be done to make it more entertaining.