I agree that a clerics healing power in Arctic is still the best. Perhaps legend requirements could change etc but that is not what stops them from being fun to play. And while I do enjoy the challenge of healing a group I don't think its enough to make them FUN like other classes.
Clerics in Arctic feel like they were plucked out of Dungeons and Dragons, not Dragonlance. There's no diversity of gods or even alignment. I can't remember an evil priest in any Dragonlance book ever healing another being of anything. Some healed or regenerated their own wounds but I can't remember one ever healing another (its been a long time since i read them though, so feel free to correct that). Only Mishakal granted the healing power that the clerics of Arctic possess? I was in Delphon fighting Haemk, the priest there of Sargonnas who summons a fire elemental and thought at least the mobs are getting it right sometimes.
I would say "It would be fun to have this diversity" but I can tell you from playing other muds that it IS. Each god is very unique and this can be reflected in the power and purpose of their followers. Dark Knights and Paladins can or could share in some of this as well. It's even possible to implement a 'worship' for every class, each god granting a boon conditionally or through clerics/dks/paladins. Or quest lines like the lily/crown/rose/sword quests for each god.
Another thing to note is that most of them are a melee class, yet they have no melee skills. I wouldn't imagine a cleric of Mishakal is much of a melee fighter though.
Clerics are restricted to blunt weapons and the weird 'misc' category, but in the books they used a multitude of weapons including daggers, swords and even spears or tridents. We even have evil priests in the game armed with knives etc. They can all wear a shield and yet all they can do with it is represented by the shields stats.
Anyway, I say this because Arctic has gone through some massive transformations while I was away and thought, why stop now.