I really like a lot of these. The Sentry Turret would actually make me want to use Stormcaller more and Atomic Force and Hysteria sound like they could be very fun, especially if Hysteria applies to normal PvE foes. Imagine turning a Hive Knight or Wizard against its allies. I have to laugh at a couple of them. Did you mean to say 'An explosive fart' on Satchel Charge? Because you did. A few of these would probably need a few tweaks prior to implementation, but they all sound pretty solid. I like the more utility-oriented ones like 'Disarm' on the Gunslinger and 'Demolition Expert' on the Striker a lot. Nightstalker's 'Cataclysm' sounds like it'd be really fun to play with, too. I'd also be ultra-happy to see a lot of these perks (barring their inclusion as Subclass nodes, that is) as perks on Exotic weapons or armor. Many of these would be very interesting and could shake up the way we fight.