Sorry but most of what you said is either incorrect, irrelevant or only an issue to people with no clue.

Exhibit 1: 'Shield specialization can actually be better than ancestral knowledge, it gives you more damage mitigation when you pull aggro off of tanks (Any Good Enh Shaman knows how easily this can happen), or when you are being focused on in arena.'

Shield specialization is of no value what so ever to a raiding enhancement shamans, it is of some small value to a Arena spec but tbh not much as it is only situationally useful. 'Any good Enh Shaman' wont pull agro from the tank, here is a pro-tip: don't hit the mob until the tank has built up some agro and even then you can ease up by not hitting SS... less dps from a living shaman>no dps from a dead one.

Exhibit 2:'Improved reincarnation is good for raiding, but Mental quickness in the Enh tree makes your shocks a lot more beefy, and is definatly worth 3 points.'

The spec linked in the article has both of these things... why even bother making this comment?

Exhibit 3:'For PVP builds extra point should usually be funneled into anticipation, gives straight damage reduction. Also, for PVP and PVE 4-5 Points in Healing Focus, actually lets you get a heal off while being beaten on!'

Any 'pvp build' that focuses on Enhancement talents is a wasted pvp'ing shaman. Enhancement is by far the weakest of the 3 trees for pvp. My advice, dont bother... respec elem if you want to pewpew or resto if you want to heal.