MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Sorry, as stated previously, I will not be designing for the RPi4. The cost is high and there is no real benefit for using it to run Octoprint. The boost in speed just doesn't give you any real appreciable gains. Also, it is not as easy as just adjusting the slots as I have the slots parametricly tied to a 3d model of the RPi3. Further, making so all the holes are the same height removes one of the goals of making a clean fit with the Pi. Also, I can't guarantee it would work anyway as I believe there is a width difference between the ethernet and USB ports
You are welcome to take the STL files and cut the slots bigger for yourself if you wish. Furthermore as you are already planning on using a Dremmel to cut other slots, you could use the Dremmel to expand the opening.
Finally, I have uploaded images of my completed print. I will have the final 1.0 STLs uploaded this weekend.