I think the PLD rework was nice. It made more sense and was a lot less janky. The rotation was very different, sure, but classes change rotation every few levels when leveling, for example, anyway.
I still don't know why SE should really change WHM. What's wrong with having a pure healer that is simple, intuitive, and straight to the point?
Not everything has to be a thesis for string theory and a million interactions and things to keep track of to be "interesting".
I do however, agree that they should rethink in some way to make synch down to low levels a lot more engaging and interesting. Because classes are done to function best at max level, synch down feels like garbage.
I don't know what solution they could implement, to allow to still keep low-level content relevant and also just not slap a sync similar to GW2 for example.