I’ll probably play with this over the weekend but it appears to be a lot of effort for not much reward. The only advantage I see over a Windows VM is that you get Windows Applications listed in your Linux Program Menu. I guess the “shared folder” thing but you can replicate that on your own pretty easily.
From a resource perspective it’s identical to a Win11VM because the docker container still has to run a complete Windows instance for the apps to work. It’s just that you interface with the apps directly (mostly) via fancy RDP instead of firing up the VM and doing everything through Windows Desktop.
You could probably accomplish the same thing by running a Windows RDS server in a VM, publishing the installed apps, and using Remmina to access them.