In the modern day of a Glitch, you're constantly collecting things, always. Tree harvests, mining ore, picking up notes as they look so lonely on the ground without a dedicated reader, and going in and out of mineral hotspots to make auction currants. So, with all of the stacks you have naturally, it becomes tedious to have to move everything into their specified bags in your inventory manually - which is why I suggest bag categories. It's a simple addition and I envision it to be a menu under a "customize" tag for your individual bag - a checklist of what items you want to be automatically distributed to that bag when you obtain them. That way, you can have a much more organized inventory without the hassle of manual moving each time you get a new stack and save time while doing so.