If you were going to change the interface this much

Why not include an option to go back to 5.59 view? I tried to watch the tutorial to go back to 4 but you assume I know what this tab is and if I don't get it right on the first shot I can't change it.
Now I'll spend too much time on something that could have been added, would you like version 5 interface or 6?
Now I'll spend too much time on something that could have been added, would you like version 5 interface or 6?