Sorry for no response as we had to push on with our workaround to meet deadlines etc, but it seems there are many users interested in the topic.
Our specific use case: We are sending the revit model to rhino to build the structural analysis model. The structural model generally does not perfectly match the BIM model / structural layout by necessity of simplification / assumptions etc.
We’d prefer to have control over the rationalisation of the BIM model into a structural model rather than adopting the logic chosen by autodesk in their ‘analytical model’ by being able to send the BIM baseline. It would also benefit parties that wish to send the actual BIM model to grasshopper for other design activities/post-processing/whatever. As mentioned our workaround was to turn off the ‘analytical model’ in Revit to avoid speckle choosing the autodesk-defined structure model from being exported to Rhino
It would be beneficial if Speckle could send both a) the actual BIM baseline of elements or b) the revit analytical model baselines so that users can choose which item they actually need.