We have had to do a workaround here because what we want is:
1) Internal person launches form
2) Internal person = workflow owner
Linked to this, it's really annoying that the Approver has to be an individual or a group (with lead individual). If the approval email were sent to the entire group rather than just the default group person, it wouldn't be so bad. Having to curate individual approvers via multiple individual conditions attached to a create field would be too much admin and quickly out of date.
e.g. use case (ours) - wide sales team launching click-to-accept contracts, need one person to lead each specific launched workflow and keep control of it.