There have been several posts about this in the past, but I am bringing it up again because it looks like the post with the most traction from @cekuhnen (https://forums.autodesk.com/t5/fusion-360-ideastation/export-parasolid-fusion-360/idi-p/5801566) was updated to "Accepted" but there has still been no update. And it has been years since the original post. Other posts fell short, or only requested the ability to import via "new design from file", etc.
Let's get Parasolid export options (*.x_t and *.x_b). I ran in to an issue today where I received an .f3d file and STEP from a colleague of a PCB component. I sent the STEP file along to another colleague working with SolidWorks. Many of the previous posts on this topic point out that STEP and IGES are more universal so therefore more useful than parasolid. However, when opening the STEP file in SolidWorks, my colleague informed me of errant bodies and faces with incorrect orientations. This has happened to me in the past as well. They prefer, when available, parasolid formats as they tend to work the best for their software.
Seeing as how Fusion 360 can import Parasolid (it would be nice if this could be done using the simpler "new design from file" option rather than the upload-then-import method, but at least it works) I see no reason why we can't export to Parasolid (*.x_t, *.x_b). I believe parasolid is the basis of the modeling environment in SolidWorks. Other basis file types for the other major CAD packages would be nice as well, but I seem to run into vendors requesting parasolid specifically more often than others, particularly with mold makers.