I agree with Hal. I'd never use a divider for this.

Quoting Ken Cole:

Quote:
An easy solution to this is to insert a group end divider directly after the group start divider.  The cast list is then not indented, and the credit listing in the credit info window shows only the role.

Semantically this would mean that the group is empty. Do you really want to go into that direction? IMO dividers should not only look good, but it should be possible to semantically interpret them correctly (e.g. in a HTML window, report, or with exported data).