The game I came from (Swtor) handles healers pretty darn well. Over there my preferred healer was sorcerer for the versatility and infinite force (mana). This meant it would never ever ever have to sacrifice deeps for healing as mana began to run low.

Swtor healers themselves have a fluctuating dps style rotation with active and passive combos that create different effects when one heal is weaved into another. Most of the heal spells and nearly all of sorcerer heals were gcd heals or barriers with instant cast ones mixed in.

Here are some neat examples! Sorcerer has a barrier skill similar to divine benison that can be placed on party members. It is a instant cast gcd so can be placed on nearly every party member if you wish to with one catch, the debuff. You can only shield someone once every thirty seconds. The barrier interacts with your mana regeneration mechanic, when it expires it removes stacks of force weakness accumulated by regenerating mana (force). When wearing certain armor or using tacticals the barrier can also aoe heal on application.

You have one smaller casted heal and one larger casted heal buuuuut these combo so if you cast one the other becomes instant and will guarantee that it does critical healing. It does not have a chance to do this it is like dps class's 1,2,3 combo.

You have one ground placed aoe heal ability on sorcerer that interacts with the above skills. Cast the big boy heal and your ground aoe also becomes instant cast giving you rotational choice. Do I use the instant cast single target heal or make my aoe instant.

Your fourth healing ability works kinda like the fay union skill only cast by yourself. You tether to one party member applying a most powerful hot. This "heal beam" as I enjoy calling it interacts with your mana regenerating ability each time it critically hits giving you stacks you can spend for additional force points and no force weakness debuff.

The sorcerer's fifth healing ability is sorta boring, it is only standard hot exactly like white mage regen or is it? With the appropriate armor set any healing applied to a target you have used regen on can cause the regen to apply additional ticks of healing and gives mana back each refresh. With passives your regen also applies 10% damage reduction to the target.

Wandering mend (your best party heal) is their sixth healing ability. Imagine a world where excogitation when proced would bounce to another party member each time that person took damage. That is how this lovely fricken ability works! It interacts with your regen too! If you apply wandering mend to someone who has regen ticking on them then wandering mend will bounce its maximum number of times without waiting for incoming damage. This spell can be used for burst aoe healing or incremental damage simultaneously.

Theeeen you have this bad boy over here --->
The Metaphysical Mender tactical with the description of; Damaging an enemy with Volt Rush causes your ally closest to the enemy to be healed, scaling with how many Empowered charges you have. Each charge of Empowered reduces the amount of Force that Volt Rush consumes by 30%.

This is not entirely true, it was actually buffed so that it will select the lowest health target for healing.

So we have healer rotations for our heals and dps skills that apply healing and never once did I see anyone complaining about having to deal damage over there as a healer. The difference between a bad sorcerer and a well played one is not insubstantial. Perhaps in a world most perfect we could get that in FF14 land but will not hold the breath, I would suffocate if I did.