Paladin Opener

[Lyth]

One thing I am very much curious though is especially for opener, since you can only fit 13 GCDs in 1 FoF, will applying Goring at 4th combo instead be worth?

Not sure if I've understood the question correctly, but if GB is the fourth hit in the window (i.e. starting with RA as the first hit), then you have the same number of GBs in the window as you would if you started with GB as your first hit. However, you also have one extra RB, because you fit in two full GB combos instead of one truncated one. You fit an extra 30 potency into the window by doing this (as RB is 230 potency, while SB is 200).