You can go from grasshopper into Robot also. Revit > Grasshopper > Rhino > Robot. Grasshopper to Robot export and of course Geometry Gym can go to Robot
Or Revit > Grasshopper > Tekla > Grasshopper > Analysis. An Alternate Automation process.
Sometimes you need to use Grasshopper to remodel everything from Revit geometry to make it right for structural analysis. So many ways to automate and modify the data collection necessary for analysis.