Apparently does not matter any more. Perception, optics and Media focus are the operatives here.
Personally, I’ll never vote for a “Bush”, a “Paul” or any other leftover conservative that remains on the books. New blood...new ruthless, dogged, determined, viscious blood that will attack like a Pit Bull and not let go.
The vast majority of people tend to vote for happy warriors, not the kind of person you are describing. Dogged and determined? Sure. Ruthless and vicious? Not so much. Leave the ruthless and vicious to the staff and campaign folks.