I think the main point is that every other mage job has some form of natural refresh, and WHM is the only one that doesn't. It really doesn't make much sense. We're the main job that is supposed to keep the parties alive, but we don't get any native abilities to back ourselves up.

One could argue that 89% of the time a WHM should have another job to support them in that area, but that still doesn't change the fact that we have nothing native to us. While every other job does, and has support from subjobs and other people's main jobs on top of it.

I wouldn't say that one is needed per say, but definitely would be nice. And make more sense.