The only downside to this script that I have found so far is the lack of a easy to use template system such as smarty or savant (codeignighter is way too complex).
As the script is currently, all the html is built into the php files and difficult to edit/template because of this.
I have put a request in the RFC forum for the html to be put into some kind of templating system so its easier to make templates/skins.
