But to answer to your question, back in HW :
-The astrologian never got such dps tools you mention.
-The White Mege used to got a AOE dot, which was also used on single target.
-The Schoolar was a summoner with a fairy who healed.
Also, back in HW, you've got cleric stance, which prevent you to heal or to deal dommage depend if it was on or off. I think this skill was very intimidating for newbies (at least it was for me), so i spend most of my time standing still (back in time i didn't do ex but only Mach series raid as healer) because i feared something would happen and i would not be able to do something (you can tell i was a newbie).