I'd go for #1, better DPS toolkits. I think the healing kits are generally fine as they are aside from having low level spells update into their higher tiers (cure > cure 2 type stuff) and maybe more optimisation options on the regen healers.

When people go on about healers being easy, I think they're probably forgetting the levelling journey for new players and inexperienced groups. Healing difficulty is always going to be heavily influenced by your familiarity with the content and your groups ability. Even on the easiest healers, it can be stressful dealing with bad or inexperienced groups, especially in content you arent familiar with yourself.

I think better DPS tools would be more relevant to the games direction and add enough complexity.