DRG is unbalanced and desperately needs a buff.

[Altena]

Dunno why you would use a imperial choker over darklight ????

+2 STR isn't worth 4 dungeon runs when the plan is to replace it with Heroes in a short time.
It is the most marginal upgrade I could possibly spend those points on, and those 375 points are being used for my other 8 jobs.

As for Fracture - It is used for filler in cases when you don't have time for a full FT combo, yet starting Chaos combo would be 2-3 seconds too early.
Not exactly that rare. It is also used when you know you will have to move, you already have Chaos/Phleb up, and you don't have time to get off or at least start a FT combo. Not exactly that rare. Filler is called filler for a reason.

Twintania alone? Not including Wyverns, Dreadnaghts, Conflags, Snakes? Or total damage on T5?
I feel that is pretty unlikely, unless your BRD and BLM are pretty under geared in comparison.