I've been re-watching The Mandalorian and finally spotted NO-AH in "The Marshal" on the sandcrawler. After you mentioned the panel, I popped off the dome, Jeff. It looks like there might be a couple of different things that can be done with this particular dome - the possible panel on the side is one, and there might be a port for another manipulator / tool near the top of the dome as well. I'm just not sure what the plan is for either of those, but it looks like they're trying to keep their options open.