What SHOULD be done is [i]BUFF[/i] the other forms of weaken. Tether SHOULD already be 30% weaken, Tractor Cannon should have a bit more because it's a shotgun, warlocks Old Gods orb is a whole set up process so it should have a bit more.
I'm not saying EVERYTHING needs to be 30% but cutting Divinity in half is bullshit, and a super should have the most.
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Div was everything way too easy. Now you have to try a little bit harder to get debuff rotations. Oh no. And now that it's been brought down a peg, Bungie wouldn't have to feel forced to design boss encounters with Div in mind...just look at how much HP newer raid boss fights have.