In the arrangement view, when double clicking on a midi/audio region, it opens up the region in the bottom panel. There should be a setting to control this behavior. Being able to select where a region is opened after double clicking.
When working with long midi/audio clips it makes more sense to open those in the main panel. People coming from other DAWs such as Cubase expect clips to be opened in the main panel.
It would make Bitwig more open to other ways of working.
The user can click Shift + TAB. This is not an intuitive shortcut for users coming from other DAWs…
Not a setting, but Cubase will always open it up in the main Window. In Logic you can ALT + double click.