Why wouldn't they play double duelist on the maps where his Pheonix and Raze work? That's just sensible, especially after T1 winning Bangkok with it. Notably though, he now has Omen and Brim in his pool so they can play Ascent, Haven and Fracture with him on smokes, and switching their smokes player for an initator - solving their comp issues.
Jingg now plays: Pheonix on Pearl. Raze on Lotus and Split. Brim on Fracture. Omen on Ascent and Haven. And Tejo on Icebox.
Since f0rsaken can flex Omen on the Raze maps they need and D4v41 can play Astra on Pearl, that's all Jingg needs to cover.
The only problem now is Something, cuz he still can't comfortably play anything but Jett and Breach. If he could get his Yoru down they'd have 0 comp issues anymore, cuz even if their comps are slightly unconventional in places, they make sense and fit their playstyles, which is what actually matters in the current meta.