See: https://devblogs.microsoft.com/dotnet/introducing-the-net-upgrade-assistant-preview/
It looks like it covers everything and perhaps even takes inspiration from some features like the great walkthrough mode that @andrew-boyarshin implemented. It also tries to remove transitive dependencies which is something we struggled to do.
We could point people towards it in the Readme and in any open issues
@hvanbakel @andrew-boyarshin