They are never going to make both sides happy, they tried for awhile to give us a choice between melee or range but ultimately that choice is holding the entire spec back.
I think the best option is to make us a feel like a melee healer without actually being a melee healer. For example, Judgment feels like a melee ability but it has a thirty yard range.
We all hate Shield of the Righteous, but what if it looked and acted like Prots Avenger’s Shield, feels like a melee ability but has a thirty yard range.
Holy desperately needs a spamable filler ability, what if instead of giving us Crusader Strike back they gave us something like:
Holy Strike - Raise your weapon high and empower it with the light, striking forward inflicting holy damage. 1.5 second cast time. 30 yard range. Useable while moving. Infusion of Light procs make this ability hit multiple targets. Give this ability an animation similar to Rets Final Verdict.