This idea that Python 3 is cost free needs to be expunged. For large classes of users, Python 3 is not possible even if they want to (which they don't). Stop this erroneous propaganda. Unicode is nice if you're a web guy, and if you're a web guy, why are you using Python already? Unicode is completely irrelevant for everybody else and is most definitely not a core reason to move to Python 3. You're living in cloud cuckoo land on your 3.x magic mushroom trip.
Earth to web jockeys. Python's hardcore is numerical computing, and that hardcore is not on Python 3, and is not moving anytime soon, and certainly not for the dubious benefit of unicode. Moreover the web stack is much less important to Python than is numerical and scientific computing, for the simple reason that while the former has multiple better competitors in the form of golang, JS et al, the latter does not.
[sidebar: since when does ascii not cater for accents?? I am bilingual french / english and I have never had a problem typing french accents in ascii? You're creating misleading propaganda again. Once again, EatHeart, I quote you: "I suspect you don't really know what you are talking about...", or worse, you have an agenda to mislead.]
you're from the US, right? there's about 6 billion people for whom ascii isn't enough. some of them program in python.
More fancy answer - There's plenty of nice improvements to the language (better handling of iterators, tidied up std lib, modern objects, etc), though it's probably worth it for unicode support alone - trying to convince python2 to properly handle international text is just a huge pain (also - no you can't just replace all accented characters with non accented ones if you want to preserve the correct meaning of text and not piss off all your customers by misspelling their names). Yes you can eventually solve all problems with python2. But why bother when you can just use the latest version, there's basically no cost for new projects.