I would like to be able to create new categories and populate them with existing assets so that I can organize assets based on the way I use them. For example, I might create a category for "Lighting" or "Hobbit Houses" or "Favorite Furniture" and then put the assets that I commonly use in those situations in one place where they'll be easy for me to find. One of the things that slows me down the most right now is having to constantly filter the assets to find what I'm looking for, especially when I tend to look for the same things over and over again. This is especially true when they're not always in the same map style, I have to load other map styles and then filter, or do a global filter across all styles. Ideally, categories I create would sit outside of any one map style so that I can combine assets from multiple map styles into one category.