Python 3 is much more than changing the print() statement (which, actually, is a great thing). It's about unicode by default. It's about removing 100 of duplicates way to do things to have only one. It's about making debug much, much easier, while at the same time allowing you to write better code with less mistakes. It's about removing a lot of boilerplate. It's about introducing new syntaxes allowing things not possible in python 2.

If you see only print, you are missing the point.

But good news, there are many projects working to improve the perfs and/or bypass the GIL this year.