Since Elena broke her sire bond to Damon by turning off her humanity, could the hybrids not have done the same? Yeah they’re werewolves but also part vampire, meaning they could turn it off, So why didn’t they to break their sire bond with Klaus?
I think the script's proposal was just to create them to complete the triangle of expression, it wouldn't make sense for an army of ripper hybrids to massacre several people this season, it would become a mess, and soon after that the context was just to preserve one or two of each species as it actually ended up in the three series.