This release adds the first revision of the back of the left joy con, which will allow for the joy-con to be nearly fully printable! All that is left for the left joy-con is the battery tray, which should be far easier to do.
Things of note:
Due to my inexperience with cad, the back does not have the trigger "bump." The outline of it is present in the step file, so if anyone would be willing to take a crack at it, it would be much appreciated.
The rumble tray is not present, but it shouldn't be completely necessary.