I very well appreciate the concept of gbXML but why can't the features

Commenting post 277: I very well appreciate the concept of gbXML but why can't the features of gbXML be included in IFC? Why should one have a separate format for energy & thermal analysis of a BIM model?

IFC2x3 has the provision of Structural Analysis Domain. Similarly, there can be a domain for energy & thermal analysis too. (www.buildingsmart-tech.org/ifc/IFC2x3/TC1/html/)

If the Autodesk is interfering here too. May be We can interfere with IFC and add new parameters as per our requirement. I remember an FB post at this instance once shared by you, "One who controls the IFC, controls the Universe."