this is all circumstantial evidence and very weak to accuse Noon League leadership. Arshad Sherif had nothing incriminating to damage Nawaz Sherif politically or put him behind bars. he has been accused for far more already and faced all off those charges in the Pakistani courts.
even a video of army chief/ ISI chief sitting together with Maryam and Nawaz on a single sofa and openly discussing against Imran Khan etc. won't do anything much as all this so called evidence has opposite effect on the type of audience. a Noon league/ PPP supporter will outright dismiss it, call it photoshopped, fake and a conspiracy.
whereas a PTI supporter will burst a vain in his temple declaring it the ark of truth and demand slaying all in GHQ, Raiwand and Avenfield including servants, guests and pets.