The old one was also not as neat as the Visual Studio equivalent. That’s why I made my own and changed from the "get info" menu of Mac OS. But each update override that icon again so I got fed up of changing it each month.
The new one is puzzling: it looks like the Visual Studio icon (which is still nowhere near as beautiful as the 2010 version), but the left part is missing. Is it a subtle way to tell that Code is an incomplete VS product?