steinberg PLEASE include a "Classic View" option if possible in next update
This is not possible, I'm afraid. The GUI in Cubase 8, despite being aesthetically similar to Cubase 7.5, is based on different Framework and APIs, which is why Aero is now required on Windows 7 (it was not a deliberate choice to annoy people, but a requirement).
I always wondered why and did think it was a SB decision and we were just stuck with it.
thanks Fabio, if this has been mentioned before, I must have missed it. but information like this does dispel a lot of scepticism.