The bags are +- fine to me, except that it's bags.
It's not designed to be used like that or it's not really good. You have to sort every items manually, the popup open anywhere on the screen, you have to open every bags to full them with items you looted, if you have 4 bags in your bar you don't see which one is for scrolls, which one is for potions etc...
This, if worked on more would be pretty good. It already has a sorting feature which could be added onto. Specific pop up location along with keeping size adjustments every time you open the bag. Custom naming system when hovering over bag.