Improve Adventurer In Need Bonus :D

[Ilyrian]

That would never happen. This means basically redesigning every single light party duty -dungeons, 4-man trials and guildhests- for this, and even remake many mechanics to accommodate the change. Not to mention the issue with the dungeon size being rather cramped with 5 people in smaller rooms, especially in the ones with bosses in them.

And that is something they probably aren't willing to put effort in.

It still seems odd to me that they didn't go with the 1/1/3 model - like the groups still feel empty in dungeons to me.
I'm still very much of the belief that a RDM could heal most of the casual content we have currently, a healer just seems like a safety net for new players leveling.
If they did make groups with 3 DPS I reckon it would actually increase the people wanting to play healers - make the play style more frenetic in the lower level content: make healing a vital part of the group.
Probs won't happen though. I do think more people should give healing/tanking a go though - I think this game is a very good entry point the roles.

Edit - also don't forget the AiN bonus for leveling - Cracked Cluster - is basically a big pot of Gil currently, depending on your server's market.
That should be incentive enough to just have a tank or healer job leveled just to run it once a day.