Anyone who use Total Commander, the first thing he does after installing Windows is to configure these Shell options and make visible all folders and system protected files. Total Commander don't handle Open and Save dialogs from other tools.
Anyway, I have found another glitch in my approach, related to the way the metadata scan routine handle these hide folders, when scanning in through sub-folders mode. Code don't check for folders attributes, and I don't want to add one more delay, so Hide and System Folders visible to all, as in previous versions.