@Sasori: Life is pretty worthless if the to-be-healed is already dead, or already at full health. Taking a skill to kill it on demand weakens your bar even more. I'd take [Recuperation] over Life, if I had to bring a Spirit. It doesn't counter Burning, it just makes red bars go up, and then you have to summon it again, and wait for it to die again. Waste of time, IMO.
Those two skills are optional, for those who don't have EOTN. (I need to replace Mending Grip too, then... Hrm...) The normal PUG tends to over-aggro, which gives Splinter Weapon plenty of targets. And as I said, you don't need to put points into Prot, because it's pretty much only for the Burning-removal, the minimal heal is just frosting.
Speaking of frosting, sometime in the past 2-3 years since I played Prophesies, something changed in the Ring of Fire missions. Either Winter is bugged, or the Titans got changed, or something. I dunno. I'll ask around. All I can say is, it worked 2-3 years ago! XD
Rangers are great at pulling, and since Rangers, Mesmers, and Eles can do some damage, interrupts, and Wards they're not bad to fill out the party, your mileage may vary. Maybe just one of Rangers or Mesmers, then? With one spot free, that gives you room for 2 Monks, so there. XD (What should a guy bring, 5 Ursan Warriors and 2 Prot Monks and my silly Weapon Spell Resto Rit just to cheer and watch? C'mon, man, cut me some slack. XDDD)
Remedy+Vengeful is not as great as you think, because Risen Ash like to do [Strip Enchantment], which takes off TWO Enchantments: Remedy and Zeal. (Look up the skill on the wiki, it got buffed last month.) When they're gone, what are you going to do? You're left with no condition removal. Weapon Spells, Mending Grip, and Wielder's Boon can't be stripped, only interrupted. Also, R+V only takes off one Condition for 10 Energy, while Breath (10E) and Extinguish(15E) takes Burning off the whole party. Unless you're suggesting that you spam Vengeful on the poor Warrior, hoping to remove the second Condition before Burning is re-applied? Sounds like a waste of time... I'd rather go back to putting 3 points in Prot, and take [Mending Touch][Restore Condition] or [Martyr]. Vengeful is only one hit, and only good for Warriors who are constantly taking hits, and therefore getting Burning immediately re-applied, and Casters who haven't learned to kite yet, and probably are not wanding, but casting spells. Assuming you're doing your job and dropping the Weapon Spells on people, Mending Grip and Wielder's Boon does more healing than whatever you're gaining from Vengeful's lifesteal.
Martyr isn't a bad idea, actually... You get it in Perdition Rock, before you start seeing Titans... Hrm...
@Bront: If you're going N/Rt, you probably couldn't take Extinguish anyways.

With that said, you make a few good points, but with only 3 spare ranks, the healing's pretty teeny. It's frosting, really. Ok, Extinguish wins.
Weapon of Remedy and Vengeful Weapon as life-steal, aren't bad though. They ARE cheap and pretty spammable, but not too good at condition removal without Wielder's Remedy to help it along. I can't even tell you how many times I was only running Wielder's Boon, and it getting stripped. If I had to deal with the disappointment and frustration of BOTH getting stripped... Yeah, forget it. XP
[build prof=Rt/Mo nosave name="Hell's Precipice Resto Experimental" Resto=12+3+1 Spawning=3+1 Prot=12 desc="Just trying this thing out"][Flesh of my Flesh][Resilient Weapon][Weapon of Warding][Wielder's Boon][Mending Grip][Weapon of Remedy][Vengeful Weapon][Extinguish][/build]
Hrm... No energy management... ^^;;;
[build prof=Rt/Mo nosave name="Hell's Precipice Resto Experimental" Resto=12+3+1 Spawning=3+1 Prot=12][Flesh of my Flesh][Resilient Weapon][Weapon of Warding][Wielder's Boon][Mending Grip][Mending Touch][Martyr][Restore Condition][Weapon of Remedy][Vengeful Weapon][Extinguish][/build]
Just looking at how they'd work on the bar, please ignore the 3 Elites and existence of more than 8 skills. XDDD As you can see, without Wielder's Zeal and Spawning Power, and adding Prot, you get a rather different kind of bar. Hrm...
[build prof=Mo/Rt name="Hell's Precipice Experimental" nosave Prot=12+3+1 Resto=12 Divine=3+1 desc="Just trying this thing out"][Rebirth][Resilient Weapon][Weapon of Warding][Wielder's Boon][Mending Grip][Mending Touch][Martyr][Restore Condition][Weapon of Remedy][Vengeful Weapon][Extinguish][/build]
Hrm... Hey Bront, you might be onto something here...