'Yes' to all of them, for some even a 'yes!!!', except:
Bow/crossbow nerf: No. Just no, if absolutely required for balance (which I don't see), give ranged weapon wielders a penalty to dodge or crit or something but I'd really hope for the times of ranged weapons having dead zones to be over. Even D&D had no deadzones, and you could all but eliminate the penalties by taking appropriate feats. Besides, have you seen Legolas in Return of the King? Try telling me again that (at least elves) can't use bows and arrows in melee. xD
2h buff: Nah. Wits increases crit for 2h just like for all other weapons, so 2h users intent on increasing crit can use this or gear with crit rate in mind. Clarity of Mind and other such buffs can further massively buff crit rate. Only scoundrels get the unique backstab mechanic with daggers anyway. I see no real value in this change.
