I can't draw the line, unfortunately, but I believe it is fair to say it's not expected to be dramatically different between level 15 and level 100, if you look at the Japanese forums (https://forum.square-enix.com/ffxiv/threads/499751). Many Japanese players appear to not feel the same level of dissatisfaction with healers as we do. They seem to appreciate the current balance between accessibility and complexity and are expressing caution about changes that could complicate the role. The main consensus, based on my translator app (I do not know Japanese, I was just curious to see what the other part of the player base thinks), is that gradual improvements are preferred over drastic changes to maintain the enjoyment and approachability of the game.
