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?