
If we're thinking by DL The Following logic, Harran became a prison for other Sentient Volatiles.
Cmon folks we do know that Kaan, some of Acolytes, Ezgi, Jasir, Bilal and his brother etc. some side characters like that use that Blue Vial in mist form. They put so much plot holes (The Following was a good make up story arc for that tho. I mean they can really extract a great story DLC from this.) after DL The Following they really forgot about that too. We need to see Harran again, like its needed. Kyle Crane wouldn't be comfortable if he know which he actually know if some sentient volatiles that cant control their humanity luring at Harran. We didnt even know what happened to the people at The Tower during Vaccine Era cus HV was finally cured before second mutated HV break out. Kyle Crane would definitely check there ıf he was in The Tower too. And yknow people are right to demand these cus we ofc need kinda story arcs. Techland (Tencent) really forgettin to serve to the community.