Regarding no DRK adjustments in 4.1

[Chrono_Rising]

You gain immediate DPS the moment you use the spiller you get from TBN. +50 blood. Use BS. Unless you are doing something silly like being over 50 blood when you use TBN. As long as you actually hit BS its a dps gain because there is no other GCD action you could have done for more damage.

You propose TBN => Bloodspiller for the (400) potency and say there is no other GCD action that would have been better.

But this is not quite exact as it depends on what GCD I'm replacing by doing that. For the same resource costs I could have:
1) Dark Arts =>Soul Eater for a 40 potency gain + 10 blood
2) Dark Arts => Siphon Strike for a 60 potency gain (1200 mana converted to 70 potency)

However, I'm adapting this to your reasoning, I don't think of this as the potency I could have done on this GCD.

I think about this as the GCD's that are being pushed out of the phase. For example, I'm not really concerned with replacing hardslash with bloodspiller because technically I could do this every time, but then I end up pressing hard slash one GCD later. What I'm concerned with is when I push bloodspiller is what gcd will I now end on because of the extra bloodspiller. If I would have stopped on hardslash then its a gain I traded 150 potency for 260 (taking away a dark arts), if I would have ended on soul eater or siphon strike its a loss (I traded 70 mp and 250 potency for 260 potency in the case of siphon and I traded 300 potency and 10 blood for 260 potency in the case of soul eater). This is why if we use TBN people attempt to use it in intervals of three in the same phase, because then I can semi control what GCD I'm ending on, I necessarily lost a soul eater combo with every 3 TBN's that pop and gain 10 DPS for the trade but I lose 10 blood. The question then becomes do we ignore the blood entirely, or do we treat it as a form of potency like mana. I disagree with the idea that we can just dismiss it out right.

I think it is worth noting, mana suffers from the same resource considerations. If you are at the last minute and can end on siphon strike or break a tbn and bloodspiller, you should end on bloodspiller for a gain of ten potency since the mana resource potency associated with siphon strike will never resolve. The existence of special circumstances for resource to potency calculations is unavoidable.