I hated opening the jam door to reload, but also thought that it looked silly with nothing in the slot, so I made something that worked better. Easy print, uses the existing pin from the jam door, along with the little catch spring. You can still open it fully if you need additional access for a jam or such.
EDIT: v3 added based on comment, currently untested.
It does look a little better at a .1 if you don't mind the time.