I'm sure this has been said before but healers don't really need some revolutionary fix to their healing kits. What they really need to focus on is making it active and enjoyable between heals. The common complaint I see is Malefic/Glare/Broil spam. Well, just give healers things to manage between their heals to have a good upkeep of damage, whether it be through buffs are raw dps. At the end of the day, DPS is king and that's just how this game works. Make that part more enjoyable for healers instead of trying to fix the core healing systems which are pretty much fixed now thanks to all prior content existing.