It would be great to toggle table summaries on the bottom or top of a table as well as on the left or right (for doing row summaries). That way if the table is extra long or extra wide, you can have summaries on the top or on the left, respectively.
Could you explain more?
Bottom and top make sense to be; right and left pose some problems.
I do this now (at the top) by creating a summary table with one row, no titles or column names; just create a summary formula for each desired column.