Li Shenron
Legend
Balance-wise I think sneak attack is just perfect to me made into a feat, +1d6 each time you take the feat. I would also probably limit it to not more than half your BAB.
Otherwise, if you allow it with no other requisite, it kind of makes the signature feature of Rogues available to everyone, which may not be very nice in a way. A possibility to keep this limited could be to require that the character already has the sneak attack ability: for example you could add that you can take such a feat one time per each +1d6 you already have from a class ability, this way it will be useful for multiclass Rogues.
Letting a Rogue give up a +1d6 in sneak attack for any feat would be very popular IMO, but only at high levels.
However if some players in our group wanted to switch feats and sneak attacks I would probably go easy and allow it straight away with no problems
Otherwise, if you allow it with no other requisite, it kind of makes the signature feature of Rogues available to everyone, which may not be very nice in a way. A possibility to keep this limited could be to require that the character already has the sneak attack ability: for example you could add that you can take such a feat one time per each +1d6 you already have from a class ability, this way it will be useful for multiclass Rogues.
Letting a Rogue give up a +1d6 in sneak attack for any feat would be very popular IMO, but only at high levels.
However if some players in our group wanted to switch feats and sneak attacks I would probably go easy and allow it straight away with no problems
