I had a thought, in some games water is the element of healing magic, could water magic now be healing magic.
Example Aquaveil in FF11 being water based, Invisable being Wind based, obviously not healing magic but buffs use elements so why not healing ?
Looking at the CON's lore we know they use the elements to their benefit, I think it would be quite cool if SE went this route it would explain where water has gone and could act as a way of keeping CON's lore in tact.