Charismatic was originally planned to give 2 happiness, then it was decided that it'd be stupidly overpowered, and the reduced it to 1 and gave it the military bonus as well.
I don't think protective is a bad trait at all. Free first strikes for gunpowder units is huge, and the added city defence is good as well. You need less city defenders, so you can concentrate more of your production on attacking units. The added city defence for gunpowder units means you can take a city with riflemen and grenadiers, and they'll be able to resist any counterattacks a lot more effectively than they would if they didn't have the added city defence. It means you can take a city with less units, because you don't need to worry about your precious attack units being killed in a counterattack.