Here is my feedback on the changes. I understand people disliking the changes but I figure I would give my thoughts for consideration as well.

I like them, to go further I am going to talk about the state WHM is in atm and then move into how the changes effect them at least from my point of view.

Before I go on, these are my own findings and my method of play, I am not trying to change the overall outlook on WHM, just my personal experience.

Regen leads to a net loss of 378 mp
Cure leads to a net loss of 11 mp
(note due to post size has to remove all my math and observations here)

So Cure overall can be considered a more efficient spell.

Now to talk about the changes, the Lilies reward you for using Cure / Cure II, so you heal normally, they proc. And can be saved for dangerous moments and help WHM do what it does best, burst healing.

This is my play style though, its subject to opinion. However I have never had mp issues this way while healing efficiently.