no real improvement

..weder regarding graphics even in terms of speed. And another drawback there are also: The GPIO interface now has 40 pins instead of 26. This means that once again purchase new interfaces or even tinker.
The two additional USB ports are also unnecessary. One can expand with additional power also means the interfaces USB hub.
What could possibly be more excited to see is Windows 10 for the Pi, although I perhaps because the Raspberry next Linux Mint used to not having to constantly be under "Windows-Google-watching".
The Raspi still remains an experimental machine. He is always recommendable. For example, the Raspi for as air quality station (see AirPi.es) is a very fine possible use, but enough to the old version completely.