Playing both Astro and WHM, there is a clear amount of favouritism to Astro because of the near infinite MP recovery we have.
If Mana Recovery was taken off Draw + Astrodyne, that would actually force us to make meaningful choices with our heals. Its not much but its a start. WHM is a pain to use and its main resource regens at 30s while Astro can draw cards for buffs all day.
Hardly seems fair.
