Request: Exclude from remote deletion

[jagomf]

I have, as many people do, a /.well-known directory in my remote with files that Apple, Google, etc provide. There are some reasons as to exclude them from repositories (such as containing SHA keys or being not static), so they should be just kept in remote but not in local.

The thing is, when I upload, I want all remote files to be deleted (as currently dangerous-clean-slate does) EXCEPT FOR that .well-known directory and its contents.
I tried using the exclude option but I believe it is not intended for that purpose.

I would like to request that feature.