Looking for Script Suggestions

Im currently looking to improve my current News System which can be downloaded here http://webmobo.com/wbnews/24/download.html

[edit]
Demo now up: http://demo.webmobo.com not all features are enabled
[/edit]

Requires:
PHP 4.3.4+ it hasnt been tested with anything lower as of yet
MySQL 3.23+ should work

Im currently developing version 1.0.0 and Im looking to be making some major changes into the way the script works. My main goal is firstly easy to use whether that be creating Themes, Implementation (which at the moment isnt the easiest and diffiantely trying ways to make it much easier yet still working on the same base), also should I be still using Classes or go for procedural approach (at the moment its using classes and its quite messy and infact doesnt really do much in terms of Proper OO design, since there have been lots of fixes and additions that design went out the window)

I am planning on building new Installer/Upgrade scripts so if you find them lacking, please let me know.

Mainly what I want is to have this script critiqued, Im not sure if this is the correct forum for this so please move if its not.

Thanks and look forward to hearing responses.