My endgame has been collecting rivens for weapons I enjoy.
Sitting at 85/90, my collection was nerfed/buffed about 50/50.
The thing is the nerf greatly overshadows the buff.
This has changed my priorities.
I have no incentive to get rivens for the latest primed/vandal/wraith/prisma variants because they will be next on the chopping block. (avoiding Tripedo and Stradavor rivens like the plague)
I used to buy every prime access and use the plat to buy 2-3 really good rivens for my fave weapons. This time I don't think I'm going to because I have no desire to buy any more rivens. Actually, I have a much greater incentive to sell most of my collection to minimize my risk.
IMHO, DE should never nerf the same weapon riven twice in a row. At-least do it every other term.
for the argument that little changes do not affect peoples builds...say that to the very few players that actually used a -mag riven on the Vectis prime for charged chamber builds. We use to be able to run a decent build with a ++-mag riven. The last two Vectis nerfs now made it literally impossible to get 1 round in mag chamber with a ++- riven forcing those people to pay a super high premium for the +++-mag versions or abandon the build altogether.
I am also for the suggestion of legacy rivens with locked stats until they are traded or rolled.