Thanks for taking the time to submit your idea. Unfortunately, this idea did not get the support of the community over the last 6 months and as such we will not be pursuing it at this time. Please feel free to rework (titles and clear descriptions are really important) and resubmit this one down the road.
Ronald, RFEM already have their own Plugin for Revit and it works quite nicely. You have a decent amount of settings to adjust concerning how you want to export it to RFEM, and if I remember correctly, you can even export the changes back and forth between the two software. You need to look no further, the export is direct, and if you do a good job modelling in Revit, there should be no problems.
Takes a bit of learning for the designers in Revit, but if they understand the basic concepts and principles of static analysis, the design of the elements should be almost intuitive.