Hello, here is the potency math for non-burst standard (3x DK, 3x TwS, 4x SP, 3x LBS, 3x TS, 2x Demo) and double TS rotation including AAs.
Burst phase is not included because right now I can't predict how opener/burst phase will change and I do not want ot waste my time figuring it out before having the new kit in my hands.
Sorry for all the hidden calculations, I just copy-pasted and upgraded my excell sheet I used for years now.
TL/DR: It's not buff, nor nerf.
Burst phase might be a boost, as: 1) more TFC are possible and 2) more raid-wide buff from new Brotherhood - but it probably won't be anything "ground breaking". Maybe we'll see -10 potency in 5.5 on a skill or two.
PSA: Double TS is no longer a dmg boost.
https://imgur.com/a/N0WaT48
EDIT: spellcheck and image link