Hello and thank you for offering help it is always most appreciated.
You can probably judge that better yourself, but I am afraid many of Clossius’s request would require backend access which is NOT open source.
If you do not find anything there you would like, my completely personal advice would be to either try and ask anoek, or (maybe even better) just pick something YOU would like to change/improve. There is so many things to do and everyone is passionate about different stuff… It might just be best to work on something YOU would enjoy the most.
And if you are just looking for ideas this page (while perhaps a little outdated) might still give you some selection to look through.