Would it be possible to have relevant airport, SID/STAR and approach charts included in the pdf version of the OFP. It would be a great usability feature and remove the need to hop from one app to another. Everything you need for the flight would be in one doc.
Something like what a youtuber did here: Airbus A320 Tutorial | From Dubai to Muscat: Following a Full Procedure Flight Plan in Real Time - YouTube
The option would of course only be available to active Navigraph subscribers.