Agreed with not responding to trolls but because those are legitimate concerns of some other people we may as well discuss those.
1) Even if enrage is not up we will generate rage via auto attacks (something they are trying to emphasize) and can use Rampage which deals damage as if enraged which is a great way to mitigate bad uptimes due to RNG. Also a 10% extra base crit chance to BT is nothing to scoff at.
2) We have vigilance, rallying cry and DBTS is a great cd for minor off tanking. With the changes to prot warrior spell reflection we might see 30% magic dmg reduction become baseline for fury spell reflect as well which would be balls to the wall AMAZING since it's where we struggle most.
3) Double charge, heroic leap, enraged speed. We are very mobile, probably the most mobile melee besides rogues and now DH. Everything we have is so much better than Death's Advance (lolplzno) and the 1 pally sprint (although that sprint is likely to be replaced by their sword port)
4) Didn't rdruid enh sham arms warrior win blizzcon? I don't pvp though so I can't really weigh in on that.
Edit: Forgot to address enrage increasing damage taken. There are 2 situations I can see (but correct me if I'm wrong because I have very poor eyesight): the first is it is a typo and it actually increases damage done. I think this is unlikely though, baseline 30% extra damage done plus 28% from base mastery? That sounds bonkers.
The second situation is that this is not a typo and we can take talents to either increase the gain we get from enrage or mitigate the negative affect of enrage depending on the situation. They could do this several ways, have a talent that reduces both the positive and negative, have a talent that provides leech when enraged since they seem to want to emphasize healing, or have a talent that increases BT healing. In any case we really need to see the talents.