About Dragon Sight I was also concerned with the chance of having to use a macro and get that delay or going the hard route and pressing buttons at the speed of light. But it was the best place that I thought of to buff the most of our opener. I also thought of focus target your designed party member instead of bosses and focus target the skill, don't know how that would work out for less buttons press, specially for me since I'm on ps4 x'D
On the potencies topic, I used the potencies from famitsu. I don't remember if we can post links but I will refrain until you confirm if we can, then I'll edit this with the link. Since this source has the most updated potencies it's safe to assume double Full Thrust combo is superior to 5 step combo strings. Math for this:
Ht-IDC4-TTT4-TTT4-Ht: this combo nets 3920 potency (180+1040+290+830+290+830+290)
While Ht-IDC44-TTT44-Ht-ID: again 14 gcds with a net potency of 3819 (180+1040*+290+290+830+290+290+180+190+130)
*[this one doesn't fully tick, it has 2 ticks left, miserable difference but still]
The difference is 101 potency, which we all know it might seem tiny but it's a gain over time anyways.
The only use I see for back to back refresh hits is in preparation for boss mechanics where we need to disengage, but since we will have 24s in our counter before the Nastrond phase this means we have 2gcds of leeway before re-engaging the boss and we wouldn't need that double refresh. Also I'm taking into account that thing they said about they don't want to force players to disengage as much, because that made losing rotations higher chance and what not, so I'm expecting more uptime in fights but dealing with more complex mechanics in the meantime.
I'd also like to note the potential of Mirage Dive having range and a 15s proc for disengages, to weave it in between piercing talons. We will have a nice extra tool to deal with those situations of dps tanking because of piercing talon spam.
If I forgot to adress something else, let me know.