I feel like they should spin up slower than the Thunderlord and have perks that would go well with their element Abbadon: Consecutive hits with incendiary rounds will set your target on fire Nova Mortis: Consecutive hits with negative rounds slow targets movement (to a degree) so that you can't completely stop a bosses movement, or let you be able to completely stop a boss but you need to empty and entire clip into them. Which would take slightly longer since the spinning up activates later