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EDIT
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This was initial analysis. Now that i've seen all the skills at max, my opinion has changed a bit. See different post.
It seem most elite drain Health bad.
Healer need constant attention on Warrior/Champion lol
Remind me of Warrior/Priest
*Edit: Doesn't appear that they scale with level (the % HP loss), so this class seems like a viable option in my honest opinion.
The W/Ch looks okay to be honest...but I think lacks some things in comparison to other warriors.
1) While they have no spammable skill (the only one that really does is w/wd: w/r should only be using shadowstab as a filler), they have a similar style to that of the W/R.
Let's look at the rotation 'fillers' (again having no idea how they scale):
-- Vendetta Blow: Inflicts 70.0% + 0.20 x STR main hand weapon physical DPS damage on a target. The more HP you lose, the more damage this skill inflicts.
Analysis: The 0.2 Str main hand weapon physical dps is not really relevant, so how does the actual percentage scale? If it scales like Keen attack (which I recall was like 3.6%? it's been a long time), then you really aren't getting a lot of damage out of this skill. Is the life lost really translating to a lot more damage? It seems to imply it is NOT % based, so my original inclination is no.
Verdict: Unless it scales well, keen attack & shadowstab are better for the W/R.
-- Bloody Slash: Inflicts 80.0% + 0.20 x STR main hand weapon physical DPS on target.
Analysis: if this scales >= 4.9% per level it's simply a better shadowstab. 30 HP cost is nothing. Doesn't seem to indicate it increasing with level. 5 sec cooldown is relevant.
--Inflicts 70.0% + 0.20 x STR main hand weapon physical DPS on the target and reduces the target's Physical Defense by 8.0% for 8.0 seconds.
Analysis: As long as this doesn't override better debuffs (W/R Splitting Chop, S/R Sapping Arrow, etc.) Then This is a pretty useful skill. I like the 8 sec cooldown aspect in that it feels just right rotation wise and it's permanent unlike W/R, at the cost of halve the -def%. IF directly comparing the 2 without other debuffs, over a long time it's still slightly less effective because of reduced effectiveness of burn.
Wild Slash: Increases damage caused by Slash and changes to consume HP. After it hits, Bleed effect can also increase Physical Attack Speed by 1.0%.
*Edit: This skill is the entire reason W/Ch may be viable. 10% Physical Attack Speed at max is no joke...
2)
SUPPORT:
This is where I feel it may be lacking.
Blood Rune Weapon: Increases Physical Attack Power by 1.0% and Critical Physical Hit Rate by 25.0 for 15.0 seconds.
--This scales okay (I think it was 6% or something?). Not amazing but decent.
Unbridled Rage: 10% str for 15 seconds? Seems much worse than 17% patk from W/Wd, but nothing to shake a stick at.
Does this really compare to nimble hands (permanent dps% buff essentially) and dual wielding (less aggro)? My initial impression is definitely not.
I'm inclined to believe that with the three attack skills above, you would likely be fine in having an actual rotation without the need to be getting hit. 5 second cooldowns are pretty short honestly, and the hp loss of the skills are low (1%) so I really don't think that is relevant (W/R should be losing 5% hp every 8 seconds with a proper rotation).
I would say switching to the class just to try it out is definitely not worth the amount of money, because in the long run I don't see it comparing to the dps of the w/r.
However, I will say that simply knocking the class based on not being able to put up a rotation is very premature and I would bet that you can definitely manage your rage effectively with the hp skills. It's all a matter of if the hp skills scale the % lossed or not that it might matter.
If I come back to the game I may test these things out at lower levels and grind some numbers to possibly see its endgame potential, but I won't be playing it over W/R. My prediction is that if skills scale well it may be able to burn close to a w/wd (but not quite as much due to the 5% party buff or w/e), but have better sustained dps. The level 15 elite skill, if I'm reading it correctly, would have the most potential. Do I think it will be popular? No. Viable? Depends if the % hp scales to make the hp loss equivalent to blood arrow or not, or if it stays the same (in which case I think the class is viable). If the hp skills do not scale above shadowstab level, then I don't see it being the #1 choice, as W/Wd has PotWS and W/R has Keen Attack and Splitting Chop. W/Ch however does have a pseudo nimble hands like the W/R in its slash ability.
Sorry for the elongated post, but the new classes seem interesting although I'd imagine levelling them up would be a little nutty. I'll sum up where I think the W/Ch may stack:
W/R >= W/Wd (depending on who you ask =P, I'm always on the side of W/R) > W/Ch > rest of the warrior clan.
*Edit: Seems closer than I originally thought based on what I've been researching in terms of life loss, but I need to know more about the support skills. I wouldn't count this warrior out. Still not playing it over W/R tho, as I love(d) my 2x Recon IX.