I want to pick a single value from a table, by specifying a row and column. Obvioulsy one way to do this is using a row filter and a column filter in combination but is there a more elegant way? If not a new node to do this might be useful.
Interesting question. You could build a "configurable metanode" for that purpose. Just use the QuickForm nodes to configure Row and Column filters as needed (by Row/ColumnID, Row/ColumnIndex, etc.), collapse it all into a metanode, and off you go.