[Firefoot]

Cobbler:

His job sucks so bad, he wants to die. The cobbler is on the werewolves team, but is not a werewolf! He doesnt know who the werewolves are, they dont know who he is. The game does not end in a situation where #(werewolves+ cobbler) >= #villagers. The cobbler looks like a villager to the seer. The cobbler is very interesting in that he actually doesnt mind being lynched in many cases, to protect a werewolf from dying. He can also create situations late in the game where he can form a voting block with the remaining werewolf and then block any lunchings from occurring. You can even have cases where the werewolf is trying to convince the cobbler that he is in fact a wolf, or that someone might fake being a cobbler to rat out who the wolf is, so they can then say they arent really a cobbler and lynch them!
Obviously, the cobbler is a strong addition to the werewolf team. I think its a great role for situations where having one more werewolf would be too strong, but without it the werewolves are screwed.

Sort of an odd role, but could be interesting.

Will day and night segments remain 24 hours long each?

Yes.