So i had a thought when i saw the sweeper bot without the broom, who contemplates existance, which suggests self-awareness and the ability to learn and question. There are only 2 known frames left involved with the tower like this. Those frames are both redjacks. Those 2 left are: Arcite 99-40, the crucible quartermaster And dahlia 99-40, a frame who hasn't really been talked about. I recommend you watch the video myelin games, the redjack uprising, for more info on her But for those who know the story. I believe that the frame with the missing broom who appeared with festival of the lost is dahlia. I dont have evidence from grimour or anything. But the frame fits the description pretty well. And it appearing with the festival kinda fits the bill too, as shes been "lost".