I'd like each layer to have a property sheet where I can enter comments.
Presently, for large documents (context: cartography), I tend to write very long layer names to help keep track of colour, content, masks, styles and whatnot. So the names are always a balance of unwieldy and obtuse. It would be great if I could add proper comments, and especially if they could appear as tooltips when I hovered over the layer.
Ideally, the same for styles and for channels.
And for these comments to be assembled automatically, with layer names, in the XMP structure for the document. That way I could search for where I had noted a particular effect, style, or whatever, among lots of documents, without opening any of them.