I’m not sure what to call the title, but there is a GTN 750 Addon from PMS50 where, if you request your flight plan from Simbrief, it will automatically be in the FMS of, for example, the 787. Maybe you could create such an add-on, as the GTN750 add-on is payware.
After discussions with the developers behind said addon, it looks like this could be done but it would take a big effort from our side. It would be cool to have it as part of our existing “Export to simulator” option in the Charts panel though!