Allow assigning roles to group manager

Hello, I'm hoping someone could help me make sense of a few things. I've installed Organic Groups on a fresh install of Drupal 7 and have worked through setting up my group type as well as a content type to be group content.

All this went fine, where I seem to have hit a stumbling block is making sense of the permissions given to the user who initially creates the group. The user who has created the group becomes the 'Group Manager' and seems to have full permissions to the group no matter what I set on the 'admin/config/group/permissions' page.

Reviewing the code I came across this in the 'og_user_access' function:

// Group manager has all privileges (if variable is TRUE).
  if (variable_get('og_group_manager_full_access', TRUE)) {
    $entity = current(entity_load($group->entity_type, array($group->etid)));
    if (!empty($entity->uid) && $entity->uid == $account->uid) {
      return TRUE;
    }
  }

The above snippet explains why the manager seems to have full access and ignores the permissions set on the config page, but makes me curious as to what the reasoning behind this is. As best as I can tell there doesn't seem to be a way to set 'og_group_manager_full_access' so there's no way to control this behavior.

Secondly, I would have assumed that the user that creates the group would be automatically assigned the 'Administrator Member' role and be governed by the permissions defined for that role. This doesn't seem to be the case, instead, in my test, the user was just given the 'Member' role.

Essentially what I would expect is that when a user creates a group they become the group administrator and are governed by the permissions set for the 'Administrator Member' on the 'admin/config/group/permissions' page.

I'd be grateful to any explanation of the above, thanks in advance!