Mm… Let me ask you (all) a question, is it really necessary to continue supporting Powershell 5.1/.NET Framework once .NET 5.0 is released? Even if you are using Powershell 5.1 in a complete company environment (like we do) it is still possible to install and use Powershell 7 on the UD Server (OR to install .NET 5.0 on the UD Server). It would simply be another requirement for UniversalDashboard.
But I might be missing something?
Otherwise, VSCode runs perfectly with Powershell 7 and UniversalDashboard 2.9.0 on my machine (With AZ module). I can also load UniversalDashboard in VSCode without any problems. What exactly was/is the problem? Maybe I can help.