Because of the whole Hanjo debacle, where people played really horrible to reach rank 1, Blizzard hides your rank if you go below rank 500. It is just shown as “< 500”.
So, if you have role(s) which are ranked around 500 you have a constant swap between < 500, 600, 520, < 500, 560, etc… That’s annoying. The system should mostly punish players who kind of sabotage the game. But some people are that bad. I think to discourage Hanjos you don’t need a level 500 limit, 100 should be enough. I don’t think you could count every player whose rank is < 500 as: “He/she isn’t even trying. Or worse: sabotaging the game.”
From my experience: People around Ranking 500 don’t play that good, but at least they try.