Pier tools & Query engine

Hi there! I'd like to ask Pier users what kind of tools could be useful in order to easily maintain their wiki (something like some reporting tools, specific search queries and so on...). We (me and a colleague) will work on this subject and try to make Pier's administrators life easier ;), with the help of Stef Ducasse. We have already some ideas but any other useful ideas are welcome. In the end, we would like to define an advanced query component for Pier. By the way, Lukas, you said that you have already done some work on a previous query component but you lacked the time to finish it. Can you send us what you have done or at least give us some hints? Thanks in advance. Cheers (and happy new year!), Sébastien