Adobe why are you slowly eliminating Preset Manager in Photoshop 2020??? This tool has so much potential. It was simple way for checking and managing almost every tool's library just in one place. Your new idea for having better organisation in all separated windows (like brushes panel etc.) is good and needed but when you become more advanced user, you need simple window for fast organizing all your tool's libraries. I thought that you will develop Preset Manager to become new floating window like any other new tool panel. New Preset Manager could have just a roll out button like "blending options" allowing to edit specific library. All the libraries in new Preset Manager could look the same as those in separated windows. User could have a choice if he want one simple Preset Manager window with all tools in it or have separated floating windows anywhere he wants or use both. I thought also that you will add "Actions" to the Preset Manager which are very important tool that need to use and manage other libraries. When some libraries are missing actions will not work and will give errors. So checking all libraries in separated windows one by one is a really big nightmare.