I have got way too many projects going on at any one time, but one of the things that has always bothered me in Python is the lack of a good templating system and I've always wanted to write my own. I've used Cheetah but it's just a text templating facility and knows nothing of XML so producing well-formed XML with it is tricky. On the other hand TAL looks good but sits on top of a very large framework. If I were to design my own perfect templating system for Python it would be XML based, with syntax like TAL, and a structure like PHP that allows putting pure Python on processing instructions. It would also be just a library and not part of a framework.
One of the nice things about the Python community is that if you procrastinate long enough someone else will come along and write the code you want; which is exactly what Ryan Tomayko did with his newly released library Kid, a Pythonic, XML-based templating system.