I'm not sure what the technical problems would be, but I notice a lot of web builders today have the ability to add customization rows in addition to the columns.

For example, would it be possible to have a carousel all in one row, followed vertically by three side-by-side widgets, then another single row news blog?

I hope that makes sense. Basically, instead of just 2-3 giant columns to add content, could we maybe customize our pages by rows as well?