I'm hoping someone else might be able to join in on this question. I think you are on the right track and I had those same ideas.
We need to find out what target version would allow all the new Windows 11 versions that will be coming otherwise we will constantly be in the registry and I don't want to do that.
Maybe someone who has a new laptop or computer that came with Windows 10 yet keeps being offered to download Windows 11 (registry not touched from when it came brand new), we can see exactly what the target version text should be.