White Mages that want to melee want to melee regardless of those spells/abilities.
But more importantly, both of those suck, but not because they require being in melee range, but instead because they just suck. Cura III doesn't heal enough to make up for the fact that you can just fulltime Solace and bust out a Penury'd Curaga V for free if the party gets significantly hurt, and even for White Mages that are meleeing, you have to swap into cure potency gear to even cure a decent amount with it.
The only saving graces of the abilities are that Afflatus Misery and Auspice allow you to get ungodly amounts of accuracy - oh wait they nerfed that and Auspice isn't worth casting outside of the Subtle Blow buff. Okay, the only saving graces of the abilities are that you can pop Misery with no penalty once a minute to unnerf Esuna, and Cura is a cheap and fast way to wake up a party.
I might not be articulating this perfectly at the moment, but basically, Afflatus Misery sucks, the effects it has on Auspice sucks, and Cura is underpowered. Afflatus Solace and Cura would be more useful for a Paladin (but would still suck), as would Dagan (why this WS isn't AoE at least on the HP part is beyond me), because they're pretty much tools for a tank. While I've heard of numerous cases of White Mages healing and White Mages doing damage, I've only heard a handful of cases of White Mages willingly tanking (and having to hold a mob because something bad happened doesn't count).