I am wondering why the content of Grid Detail component is forced to have a colspan for all grid columns.
Sometimes it would be great option to use grid columns sizes for organize content of detail.
For example I have list of records and one of the columns shows some default object, but I would like to show additional objects for 1:N relationship.
When I use Detail component I am forced to style inner content of it to be able to show it properly according to grid column sizes.

Wouldn't it be more beneficial to let developer choose when use colspan and move show/hide logic to Row containing Detail?