Just a small comment while I’ll discuss your proposal with Roberto: in your original question, you asked about facet temperature. Since MolFlow 2.9.15, facets temperatures can be time-dependent (just write a parameter name in the temperature field). One limitation is that these facets that change temperature cannot be outgassing (the outgassing-rate / molecule-rate conversion would be too difficult).
We’ll get back to you about the MFP.