It is almost a reverse Onslaught, but unlike Onslaught, it doesn't scale damage down to the next archetype the gun would match (or almost match) the ROF of. You can refresh it as easily as Rampage, but unless it's extending the OHK range or improving the TTK, you won't find many people using it without High Energy Fire for weapons like Wolftone. There's not really any reason to use it over other damage perks. Judgement might get easier kills, but is it worth increasing your TTK to match a 120? You'd be better off with any 120 that has Rampage or Multi/ Kill Clip, especially with Burning Steps, Battle Harmony, or HEF. Vulpecula gets upgraded to a shorter ranged Luna/ NF. Fractethyst gets a further OHK range. Most, if not all the other weapons suffer because of the ROF decrease. Unless damage scales with ROF, then is increased by 20-25%, it will essentially be the black sheep damage perks, but then you'd have people complaining about a weapon like the AR from Prophecy doing more damage than a 360 AR with the ROF of a 450. One could argue it's OP, but I'm not exactly wrong either way.