I was going to say this is a good idea, but after downloading what they give you, they don't let you change what people had the most problems with--the window layout, etc. Seems more and more like a publicity ploy to me.
Publicity stunt. CSS cannot change the window size.
Skype need to provide a download of version 2.8 on their site until they have fixed 5.0. A "classic mode" will suffice.