Juggernaut was introduced in the Coven expansion, 5 years ago. There's no reason to keep it a rare role, everybody knows about it. Make it as likely to spawn in game as other Neutral Killing roles, or at least more likely than it is now. They also can't even be put in custom as a static role either, so allow people to do that. Also allow people to buy Juggernaut scrolls, and maybe even introduce a skin for them, I could imagine one being pretty damn cool.
A lot of the time, people pity whoever gets Juggernaut and sometimes will gamethrow just to leave them alive due to how rare the role is, or will purposely go after other roles first for that specific reason. Making the role as common as others will help get rid of this meta.
They're also generally a cool role, but when you can barely play as them, it kind of defeats the purpose of having them in the first place. It being unique and a Neutral Killing already makes them hard enough to spawn in the first place, but they were given a lower spawn rate compared to almost every other role in the game.