DSR was just solo healed

[Hellebore_Ghrian]

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).

Dat non-sense.

Back in HW healers had something to heal to begin with and other roles didn't heal on their behalf as much as today. Back in HW encounter had unavoidable damage.

Or maybe can you show us how the last 24-ppl raid and ones from HW in their time are the same in the healing side ?