I think DE kinda screwed themselves by leaving dispositions unchanged for such a long time. Its obvious now that there's only supposed to be "good" rivens for bad weapons. but because we have had amazing rivens for amazing weapons for so long people got used to it. Now DE is trying to bring down the power levels and fix what should have been fixed ages ago, and in doing so is taking away peoples power fantasies that people paid a lot of plat for.
DE should just bite the bullet, tell people they screwed up with the rivens, and do a massive riven balance pass to get them all where they want them to be. At least that way im not going to see all my favorite rivens get worse and worse over the course of a year or 2. just rip the bandaid off and be done with it.