If you create a new group, you have to click at its "Configure" page to choose the styling ("always open", "collapsible", "collapsed"). This becomes annoying, if you have to create groups for several content types (unfortunately, sharing of created groups through different content types is not able?)

It would be useful, if you could choose the styling while you are creating the group (in a manner similar to CCK fields, where you can select the field type, etc.).

So users should get a select list in the same step where they have to enter the the "Label" and the "Group name".

(can't test Drupal 7 version, so I don't know if this might have been changed in there)