I would like to suggest for grouping feature that we can group a number of questions under a main question.

Current my project is having a requirement that need to group a list of questions with select box answers into one main question.

E.g.

- Question A	[Dropdown of answers]
- Question B	[Dropdown of answers]

When the dropdown of answers is limited, I can present the questions in Radio Grids, but when there are far too many options in the dropdown (more than 15), the radios grid will be not usable as the generated table will be very wide.