In addition would be essential, to make EcoDesigner Star available in all market and compatible with national standard( infact in Italy couldn't be purchased), and update the calculation engine with the latest update of VIP Energy, or if needed change completely(one example could be Energy Plus from USA department of energy,
https://energyplus.net/, that should be also open source)
AC 6.5-26 | Latest build | Win 10 Pro 64 | AMD TreadRipper 1950x 3.4 Ghz | 64 Gb RAM | AMD Radeon 5700 XT 8GB