yards

Hello. On the picture below you can see different configurations of rail yards. All configurations, except first one, provides sidings of almost the same lengths.

I know the answer: "well, it is your layout", but I want to know if this (attached image) makes sense: the turntable as part of the classification yard. Not my design, I found it surfing the web but I find it very interesting. I am still searching for a design for my 280x80cm additional section...