My vote's for Agito. The power to tear apart angelic beings with your bare hands? Sold!
Also that a good chunk of the population can become Agito so he never really dies.
But that really destroys the whole point of being a hero. Everyone knows it's a disaster when we have more than one Riders. Hell, almost all the movies, actually, ALL THE MOVIES has an evil Rider or anti hero Rider somewhere in there to **** things up for everyone.
And that's just one guy. Why would you want a population of Agito? That's the biggest mistake anyone could make cause they'd just crush one another and it defeats the point of having a savior at all. That way, everyone can save themselves and these guys won't even be considered special cause literally everyone can do it.