Before I go any further, let it be known that I very rarely do PvP, and if I do I usually create a PvP Only character and fart around for the evening in Arenas before deleting that character and going to bed. I enjoy PvE immensely, and when I'm not doing Cooperative Missions I'm out typically exploring/questing with a full team of henchies.
My first character in GW is a Ranger/Elementalist, who is level 20 and at Sanctum Cay, done all the missions and quests I could find up until that point. I created a Monk/Warrior because I'm envious of the healing ability of all the monks I've played with, and having Warrior tacked on the end seemed like a useful secondary from what I'd read at that point.
My Mo/W is now level 14, just left the Northern Shiverpeaks, and my build is like this:
Healing Prayers - 9 points
Divine Favor - 5 points + 1 Scalp Design
Protection Prayers - 6 Points
In the Co-op missions so far I've found a role that works very well for me; basically I heal the ---- out of everyone (with Healing Breeze, Orison of Healing, and every now and then Heal Party), using spells like Guardian or Vigorous Spirit when I have the energy. I try to have Divine Boon (love that spell!) running as much as possible. That works fairly well, and although I don't contribute any significant damage, that's okay because people seem to like the fact that I keep them alive.
PvE-Exploring is a different matter, because I have difficulty if I don't take a full team of henchies with me if I want to go out "on my own" (meaning, no other living beings with me). Usually I bring both warriors, Alesia, Orion and Reyna (Claude and the Enchanter-Guy's purpose is lost on me), and for the most part I throw the occasional heal and wonder what else I should be doing while it takes a while for the henchies to go through each clump of the enemy (the NPC's heal themselves faster then I can, typically). I've toyed a little with Smiting Prayers, putting my 6 points there instead of Protection, but what I find then is that in big fights I can dish out some significant damage, but I run out of Energy in a hurry so I'm hesitant to go that route in Co-Op (for fear of getting my group killed).
So basically, what I'm looking for is advice for levels 14-20, on what skillsets I should be focusing on to get the most out of Co-Op/PvE. I enjoy having a lot of healing power, which seems to be my place in Co-Op and I'm happy to stay that way, but in PvE-Exploring I'd like to have a little more responsibility, perhaps even picking up a weapon from my Warrior side (Hammers appeal, but at the moment I have more skills for Axes then any other weapon). I've read that Smiting is a good way to go, but it seems kind of weak to me (unless I'm missing something...I used Banish, Smite and Bane Signet as my Smiting spells when I was toying with it).
Basically these are the spells I'd like to have, and obviously I'd like a lot of skill points in Healing Prayers:
Healing Breeze
Orison of Healing (to be replaced by Heal Other when I get it)
Divine Boon
Restore Life (swap for Rebirth when I get it)
Heal Party isn't a *must*, because the 15 energy annoys me especially when I'm down to +3 Energy Regen with Divine Boon running.
I'm also open to staying with Protection Prayers and basically leaving the Warrior side completely alone, if someone can point me in a good direction for what combination of spells to use to keep one or two warrior henchies alive for PvE-Exploring with less then a full group (maybe only 1 or 2 henchies at all?).
Perhaps my biggest problem is that I don't think I'm helping enough just healing/protecting, and it's a psychological thing! If so, just tell me!

Thanks for your time...