Nice move from Smarty
to Template Lite. This will surely turn the system faster without disrupting it too much. Very nice, indeed.
I would like to propose two other moves
1. SwiftMailer - it is faster and more recent than the more popular phpMailer
2. Simplepie - Works much better and faster than Magpie
Those two small changes won't be to hard to accomplish.
If possible the addition of ...
1. Prototype Window Class for registering, login and messaging windowing
2. Automatic Keyword Generator for use with RSS input feeding, but not only
3. Use of external OPML file to load and save the Feed Input links and categories
. A nice script to study can be pulled here
And the use of ...
1. iFeedReaders Clicklet Creator and Social Bookmark Link Creator ideas
2. Sociable ideas based on Wordpress Sociable Plugin