Users need the ability to turn on/off snapping by layer without having to disable the layer in the table of contents. When the 'new snapping' was introduced many users were unable to work with it and so 'classic snapping' was brought back. Going forward 'classic snapping' should be the design paradigm - many users enjoy the Cad-like functionality as it makes doing their job easier. I have yet to meet someone in industry who uses the new snapping.
There has also been a few users complain about snapping tips not functioning properly (flashing and vanishing). This is a bug that needs to be sorted out as well.