Hello,
sorry for the crossposting, but I wanted to reach out to the wider community. Please *only* reply to website@global.libreoffice.org so we have the list in one place - thanks!
As part of the new wiki setup, I'd also like to install some more extensions. If I recall, there have been numerous requests we couldn't fulfill so far, and now is the chance to do so. 
So, if you have one extension you desperately need, please add it to this thread, so I can investigate and have a look! My clear preference is to use one of the extensions out of the WikiMedia-maintained repository. [1] Any other extension causes a lot of more work, so please think twice before requesting an extension not listed there.
Also keep in mind that any extension creates a bit more load, so we should only install those that are really needed for production. For anything else, e.g. for trying out new extensions before deciding about them, I'll provide a "testbed" wiki soon.
Thanks for your feedback 
Florian