redmine itself is a quite great application and it is also benefit with lots of plugins available to extend/enhance the redmine itself.
currently there almost 300+ plugins, and some of them are listed in the plugin wiki page. still, i think it's quite hard for the user to browser and install.
what i preferred is kind of plugin store and user can easily browse and install plugin, just like jenkins/hudson plugin management that user can easily view/filter the plugins and install them with few mouse clicking.
what do you think?
i also created a ticket #12327