Before listing a bunch of specifics about newer changes I'm guessing you don't actually care about, some of the basic things at https://libwifi.so/features/ would be good to complete first before the newer stuff since the last update was 2023, not the last completed feature level (Wi-Fi is enormous).

There also seem to be some open bug reports despite the low level of usage e.g. https://github.com/libwifi/libwifi/issues/24.