I like the concept of nested tables in a Deck View. But there are a few issues that keep me from using them related to the Deck View fixed height when the Nested Tables are added.
When a table has only a few lines there is a large gap left between one Deck View item and the next - due to a fixed height. This gap should be dynamic up to any size limiting factor meaning it should dynamically reduce the white space gap between Deck View items until it reaches the maximum Deck View item height.
When the number of rows grow beyond the fixed Deck View height, rows are cut off from the view. There needs to be some row limiting property much like that found in Detail Views that limit reference item lists to a set property and then shows a count indicating additional rows are available.
Large white space gap between Deck View items
Rows are cut off with no indicator of additional rows - table shows 7 out of 8 rows