1 - Does the Were-beast have the regeneration, enhanced senses and other such talents in pure beast form, in beast and hybrid form, or all the time (e.g. while in human form)?
I would give them lesser regen, enh. senses, etc in human form, but full in hybrid and animal form.
2 - If my base person was a Harper(3), Fighter (2) - then would the Lycantrhope attack as a level 8 fighter (meaning 27 ranks in OB for an OB of 77)? And would they get this OB in both beast form or would they get it in hybrid form as well?
OK, I only read the second post, but let me guess what an ICE official said: They need to develop ranks in attacking as a hybrid and animal form seperately. (If any have responded yet) Well, I wouldn't go that far, but it would depend upon how you are playing this affliction. If it is truly an affliction, I would take their character away during the rages. If it is more like a WOD/Werewolf game, then I would make them at least use either theri existing brawling or Martial Arts: Striking skills, at a negative. Then have them spend some DPs (not a 1000 over the course of 10 levels) to get rid of the negative - what ever you think is appropriate.
3- Max endurance and stalk & hide, and ambush in beast form or hybrid form?
These would definately be different in beast/hybrid form, usually more. How much more is totally up to you and what you feel comfortable with, but 10-20% higher should be good enough, though you could go as high as 30% more. I would even have human form have a 10-15% increase to reflect their supernatural nature.
4 -Tough Hide Minor - which forms does this bonus apply to (beast, hybrid, human)?
Beast & Hybrid, not human. His greater toughness in human form should be reflected in slightly higher endurance. If you have lycanthropy being very supernatural in origin, maybe a DB bonus verses non-magical weapons. Nothing huge, though.
5 - Does a Lycanthrope in beast form still have the ability to cast spells? How about in hybrid form? (Assume the person form CAN cast spells (e.g. the Harper (3) above)?
This goes back to #2 above. If they are accursed, then NO. If it is under control, then NO for animal form, and uuhhhhh.... maybe with a negative in hybrid form?!?
Of course, I have barely touched the surface on the HARP rules, so I could be way off here.