Lack of "customizability" of presenter display

After installing Keynote 6.0, I had to make a presentation for my class. However, I could no longer modify the overall interface of presenter display.

I don't need present slide or the next too much. I need my memo more.

I really hope to get this feature back soon 😟 Until then, I'd better use Old Keynote for the actual presentation after making one with new one.