I'll post here with updates as I go...
First up attempting to generate a 3D level with basic rooms and corridors.
Why do you think I was asking about Minamal Viable Metroidvanian game design? https://itch.io/jam/metroidvania-month-21/topic/3076384/what-would-be-needed-to-...
Next week's tricky since I will have my own project to be working on and unlike most of these jams, haven't taken any late-in-jam time off from work. However, I could probably carve out an hour with sufficient notice. Depending on how well my computer runs it (newer, but not a gaming PC by any stretch) and how much time I have, the feedback will range from "my computer can't run this well enough to fairly evaluate" to a short play/reaction video.