Basically an addition to the Save/Load GUI where you can create folders and move saves around to different folders, like before with the maps, only with custom made folders. This would make the save GUI much more organized.
If you were to view your saves folder outside of Blockland, you would see that inside would be no saves, just folders, and within those folders would be your saves. The names of these folders would be the same names in the list of folders in-game.
Just a few ideas, but my saves folder is very cluttered, and I can only imagine what some of yours are like.