Hey, thanks a lot for the great tips and tricks. I have another alternative method for tip 5: You can also scale the astronaut using the Object Animation tool. This tool is located under the Model tool; just keep the mouse button pressed.
Very nice compilation. I am using C4D for a really long time now (started with R7) but I didn´t know all of them. Tipp #5: The problem why your rig gets destroxed is because you are currently in "model" mode. Change to "Object" mode (note the little film icon?). Now you can scale the rigged character without going into a new scene. The difference between model mode and object mode is in model mode you scale the object itself but leave the axis untouched. Basicly as if you scale everything in poly/point/edge mode. In object mode, you scale the object axis/matrix instead. When you look at your coordinates section, you can swith between size and scale. It took me ages to not being confused by this anymore.
You can place objects with dynamic place, and scale animated objects by using “Animation” mode instead of “Object”, no need to copy paste anything into new scene!