1) Unknown Ponies: Failure is Awesome is up to version 1.5. Most of the changes are grammatical in nature, with a few bits added for additional clarity. The link is the same, as every time I update the version I overwrite the old one.
2) Would people be interested if I added stats of the Mane 6, Cutie Mark Crusaders, and other NPCs (Big Macintosh, Derpy Hooves, Mayor Mare etc)? Would you prefer them either appended to the PDF or as a separate download?
3) Advanced Rules: Names and the Cute-ceañera
While many players of Unknown Ponies will have a firm notion in mind of their PC's eventual cutie mark and will name him or her accordingly, there are some players who will find it more interesting and challenging to leave their cutie marks up to chance and role-playing. This however presents a problem when it comes to names.
While some ponies have names which are unrelated to their cutie marks (Pinkie Pie), many more of them do. This is not a problem on the show, as the writers have the ability to decide ahead of time what a pony's cutie mark will be and name that pony accordingly. For a player who wants to role-play the discovery of a cutie mark, this is not possible, and as characters need to be named something, they are forced to either take a generic name or risk choosing a name which will potentially clash once their special talent is discovered.
Correcting this is simple: we take the concept of the cute-ceañera -- a party held for colts and fillies upon gaining a cutie mark, and combine it with the Japanese coming-of-age ceremony known as the genpuku. When a pony comes of age, she may choose a new adult name (usually related to her cutie mark) at her cute-ceañera, or she may choose to keep her childhood name. Neither is more socially-acceptable than the other; it is entirely a personal choice of that pony.