There’s a filament saving variant where you can use toilet rolls or other waste cardboard for the walls: https://www.printables.com/model/880256-cardboard-gridfinity...
That is a great improvement, but best would be a combination of both designs, the former adding the "finder shelf that can also serve for labeling, and the slopped bottom that allows scooping out individual pieces.
Another improvement may be to make the top and bottom pieces stackable along with the snapping grid system compatibility.
Not gridfinity compatible, but I have a set of corner pieces that uses a similar concept. The majority of the material can be scrap acrylic, mdf, cardboard, etc. and you just print the corner pieces. Lids and stuff too.
https://www.printables.com/model/57813-boxkit-parts-for-maki...
3d printing is great, but a lot of wasted plastic if you print large organizers and stuff like that.