What about Miasma II? The only reason you would use it in single target is because it was better than Ruin II.
What about Shadowflare? Just an extra button you would press on cooldown with very few exceptions.
I've already said that ED is the only meaningful thing we lost.
We still have options for both healing uptime and downtime. You can still take risks.
"Fun is not spamming one button in a dungeon". But spamming one button with an occasional other button is? Because that's what we have at the moment.
So I'll reiterate. The fun is in balancing your DPS with healing, not in having several buttons that simply replace Broil in your basic rotation.