To be fair, Julian's pretty good, as a fighty ramp and all. ...But you don't really need to run 2 soldiers most of time and Katie is a staple for pretty much everyone already. And old-timers have their min-maxed Aria. And should one manage to pull Jerome, he can shelve all other soldiers anyway.)
Well, sans Jerome, he's also has the fact of being only ramp option for male-only maps going for him, there's that)