Here's another suggestion. There could be an optional org table mode in which horizontal lines are used to separate rows:
| Lorem ipsum dolor sit amet, | foo |
| consectetur adipiscing elit. Sed | |
| sit amet luctus sapien. Phasellus | |
| malesuada, ipsum et hendrerit | |
| mattis, neque neque sodales risus, | |
| hendrerit consectetur enim ipsum eu | |
| felis. | |
|-------------------------------------+-----|
| Vestibulum ante ipsum primis in | bar |
| faucibus orci luctus et ultrices | |
| posuere cubilia Curae; Nulla dictum | |
| iaculis sodales. Sed elementum | |
| semper leo, venenatis lacinia odio | |
| eleifend vitae. Aliquam lectus | |
| felis, tempor nec lacus ut, | |
| consequat tincidunt nisl. | |
|-------------------------------------+-----|
| Fusce eu nunc sit amet orci | baz |
| lobortis accumsan. Vivamus laoreet | |
| ante pellentesque, scelerisque | |
| tellus nec, ultrices nibh. Etiam | |
| scelerisque lobortis erat, in | |
| consectetur nisi tincidunt a. Duis | |
| eu est elit. Pellentesque fringilla | |
| gravida ligula, non convallis | |
| ligula viverra sollicitudin. | |Perhaps adding the required machinery to allow in-cell paragraph filling would not be too difficult?