In a group that I am playing in we have a fighter with a weapon with improved intiative on it. What would happen if that weapon was given to a character that already has that feat. As of right now I am not sure how the weapon could be built with feats on it, but anyways would that then let the character with improved intiative and that weapon get a total +8, or maybe a (4+2) +6 like a synergy bonus or just his normal +4.