I was told I should try ultimate, if I wanted challenging healing-based content.
I did (and I still do), only to find out that, guess what, healing Dragonsong's Reprise is NOT challenging at all. At least from a pure healer perspective. EVERYTHING in that fight resolves around mitigation. Mitigation here, mitigation there, mitigation everywhere. So... what exactly is my role in that fight then? As an Astrologian I have my bubble on a 60 second timer, and my neutral sect on a 2 minute timer. That's it. That's my contribution the fight.
There is no juggling around oGCDs, because everytime I need to heal my party back up, I have plenty oGCDs to chose from.
I remember TEA being way more demanding in terms of short-timed burst healing - which is what pure healers excel at.

But Dragonsong's Reprise just kicks pure healers into mostly spamming their respective DPS skills, to a point where I find Pandemonium Savage 4 more challenging to heal.

Dragonsong's Reprice has extremely tough mechanics all over the place. But sadly tough mechanics do not automatically translate into challenging HEALING content. I found that one out the hard way.

So basically this is driving me towards actually quitting my job as a healer. The only thing currently preventing me from doing so, is that I don't want my static to have to look for someone to replace me.