Do you use hive mats on top of your frames? I haven't seen any in your videos. A piece of offcut lino or plastic sheet place on top of the frames will prevent bees from building above the frames. It doesn't have to cover the frames entirely but this should help.
Nice videos and thanks for sharing your experience.
No I don't use an inner lid or mat. I imagine this would just give another place for beetles to hide. I'm not sure I want to stop them building under the lid anyway? To me it seems like a good way to tell that they want more room. I add a super and they stop building under the lid.