Attached you can find a patch that adds a hook to the issues/index.rhtml view and makes it possible to display information related to the current filter selection. (e.g. detailed statistics or something simple as http://github.com/rmoorman/redmine_hours_left)

I am currently developing a small plugin for redmine which allows to display the hours left on a project/set of issues. One place where I would like to add that piece of information is within the issues/index.rhtml view. Unfortunately there is currently no hook which I could use. This patch would add the hook I need and would surely provide some extra possibilities for other plugin developers to add more related information to redmine.