What room size would constitute a submission to be “too large” ?

Also, what is the defining line between “one room with a partition” and “two rooms with a dividing wall” ?

(For the record: I’m ok if there are no defined limits, and it’s judged off of vibes and consensus)

Could limit it to a page spread to keep room size manageable and useful at the table. If compiled together, the standardized size allows for easy collation.