What class do you consider is the hardest to master that if you play really well, it would be considered the strongest class? I’d say Paladin, regardless of the mechanical challenge and upcoming changes because:
1. You get focused by the enemy, you’re a high priority target since you just keep filling everyone’s health bars if they don’t kill you first.
2. You need to prioritize between yourself and various allied targets on the fly, even if you are under someone else’s attack you can’t just become a turtle spamming heals on yourself and forget about the rest of your team. Enough Bless Online Gold is necessary.
3. You are rooted for most of your casts, so choosing when and where to cast requires commitment to every action
4. Limited range, while you’re ranged for heals you still need to follow your companions otherwise they’re too far from you and will just die when they expected you to have their backs.
5. Cleansing and buffing, you need to be aware when someone is affected by something that requires a cleanse spell on them, and also know when it’s not needed because cleanse has a cooldown afaik so you can’t just spam it. Same for buffing, knowing when buffing is worth the trouble and when it’s not or knowing if it’s safe top stop healing to apply some buff.
6. Moderate to low dps, you’ll struggle to kill anyone trying to kill you unless you’re over geared and know exactly what you’re doing and what they’re capable of doing, timing your cc when they’re charging something strong or when they’re going to get away. 1v1 is a battle of atrition, so you can just keep healing yourself until they have nothing left in them, but in that amount of time is very likely someone else will join in and change the odds dramatically.
7. Skill/gear selection, it’s very challenging to choose how much tankyness, how much healing and how much cc/damage you can squeeze without losing crucial functionality. This is specially troublesome because people interact with various healers that are focused in one aspect, and then they expect you to be as good at them at surviving/tanking/healing/ccing/damaging as someone they met who was specifically tailored towards being excelent at one task.
8. The psychological trauma, knowing someone died when you could have saved them but screwed up makes you feel bad about it, and a lot of the time they will blame you regardless of being your fault or not, just because they won’t accept they died because of their own incompetence.
Overall I’d say being a bad healer is easy, you just heal yourself to max in one or a few casts and switch to the lowest target if you are not at risk. But being a phenomenal healer is the hardest role when you are under pressure, and people will notice and love you forever when you do a great job, it’s a lot of responsability having to babysit people who are reckless or don’t have any idea of the mechanics and at the end of the day is usually a thankless job with an extra burden on your back.