Thanks for the feedback,
I'm indeed planning grouping, probably in the version after the one with flexible parts. In the meantime you could still do what you need/want by mpd (submodel) usage or manually adding the parts to the selection, followed by adjusting the selection center (bottom button of the editing pin) before rotating.
Or if you want really 'weird' rotations you could use the rotation dialog instead of the editing pin to rotate the selection. With the dialog you can rotate around a manually entered vector or use a custom rotation matrix.
I'm indeed planning grouping, probably in the version after the one with flexible parts. In the meantime you could still do what you need/want by mpd (submodel) usage or manually adding the parts to the selection, followed by adjusting the selection center (bottom button of the editing pin) before rotating.
Or if you want really 'weird' rotations you could use the rotation dialog instead of the editing pin to rotate the selection. With the dialog you can rotate around a manually entered vector or use a custom rotation matrix.