I'd say their is two side of the problem, one due to healing in single group content right now and the second due to the need to DPS or not.

1) Healing: FF online lack casual content for better then average player.

If you are a casual player interested into healing to the level of having a challenge while sitting at over the 60% parsing mark. You are just screwed. Yoshi seems to think that every good player will raid and the ones who just want to have fun while relaxing will do dungeon or solo.

I am not a fan of World of Warcraft but they nailed it as far as single grouping content challange. Regular dungeon can be easely cleared by a full group of noob/bad players/ players with disabilities or people that just want to relaxe and chat.

Then their is several layers of difficulties in dungeon that will lead you all the way up to requiring the skill and dedication of players in the 99% mark. 5 man dungeons in WoW can be harder then the hardest raiding content at some point. So you have something for everyone.

2) DPS requirement or not.

This is the part where not everyone can be pleased. Cuz if the game give you the room for dealing damage a sa healer, it does mean that you will have waiting time if you don't. Sure you can complet every single group content FFO while doing zero DPS as a healer but you'll be staring at your screen doing nothing for long period of time. And if your the kind that want damage dealing healers, well you probably think healers are boring cuz ti has no dept. Its like if Yoshi wants healer to deal damage but he also want it to be so easy that everyone can do it.So it is not fun for those who wish to do both jobs (healing and dealing damage).

So right now, grouping in FFO as a healer is just fun for 1 type of players. The noob/disable/bad players and/or people that want to relaxe.

P.S. English isn't my usual language so I hope the therm "disable" isn't something offencive. If it is I am sorry.

Also, I don't use the word "noob" to be mean or to bash on anyone, its just to point out players that are new to the MMO genre.