I don't really like the new lack of control.. what made Leaves great was the customization.. for example now as other said even with throughput at maximum it prioritize healing touch over wild growth, resulting in a loss of hps.
And while with the old one i could just adjust it, knowing my class, now i can't: i have to come here, tell the problem, wait for you to make new calculations and push a new version, wait also for the honorbuddy developers to receive and push it... not knowing if it will solve the problem on the first iteration.
We all know that Blizzard always changes class balance.. especially early on an expansion.. i fear that every time that Blizzard will change some spell balance, with the new version of Leaves, to be top notch i will have every single time to wait for you do to the right changes, with all the testing that this means.
In a mythic progression environment, this means putting aside Leaves and use another routine in the meantime.
I really like the idea to make Leaves beginner-friendly, but the current version also makes Leaves advanced-unfriendly.
I think that a dual-sided UI, Basic and Advanced, with the advanced one having much more control, would be the solution.