Hex Rules Clarification

[Masroos]

Complete newb here and after not being able to find my answer in any other discussions I've been forced to come out of hiding and ask.

Regarding the Witches Scar Hex, specifically what was written in the FAQ.
FAQ: Scar Hex

The line I'm interested in is this:

FAQ wrote:

Fourth, the hex could benefit from a mechanical boost. Therefore, scarring a creature with the hex has two benefits: the witch can use any of her hexes on that creature at a range of up to one mile, and the witch is considered to have a body part from the target for the purpose of scry and similar divinations.

First, what is a mechanical boost? I can't find this term in the books anywhere and in fact the only place I've seen this term written is in that particular faq.

Second, and the important part, why does the scar hex allow the witch to target that creature (that is affected by her scar) up to a mile away? And why don't any other witch hexes behave that way? (e.g. why doesn't putting blight on a creature also grant the 1 mile hex range bonus)?

Clarification on this rule would be very helpful as I won't be able to use scar this way without justifying how it works like that to my DM (since it isn't described this way in any of the books that I've found).

Thanks in advance!

[Cheapy]

He is saying that it could be more powerful, so the following sentences are the way to make it more powerful. The way it is made more powerful is to allow the witch to target them up to a mile away.

The next printing of the book will have this updated text.

[Masroos]

So the DM doesn't have to allow this modification then to the Hex?

[Cheapy]

Of course not, but the official hex now has that ability.

[Masroos]

Thank you!

[Kalyth]

Any furthere printing of Ultimate Magic will have the write up for the Scar Hex as seen in the FAQ. Basically they Errata'd it. They change the effect because the original write up was just kind of useless.

As to why the scar hex lets a witch target up to one mile away with other hexes. The Scar Hex "Marks" the target both Physically and Mystically. This mark forms a bond between the target and the witch. As long as the subject is under the effects of the Scar Hex the witch can use that connection to affect the target with any of her other hexes at a range of up to 1 mile away.