Biggest example is stacks. Neat, looks cute and all -- great job Apple, but you can't navigate through sub-folders or even have an option to revert to the normal menu style?
The thread I pulled this out of is locked, but I had a question- what does it mean about the option to revert back to the normal menu style? Making a stack of something doesn't take it out of finder, no? What "normal menu style" can you not use if you have stacks on?