I love WHM but is agree it's not the best it could be.
One thing that always bothered me about the 5.0 rework is how Cure II and Afflatus Solace and Medica and Afflatus Rapture are the exact same buttons but for some reason need to be separate buttons. Under no circumstances have i ever found myself wanting to cast Cure 2 over Afflatus Solace when i had a lily stack ready. So why not turn these buttons into 1 via trait and use the extra room we freed up for things missing from WHM toolkit?