This was quite a big size spider with super long legs.
Male. Spotted on web of female Trichonephila antipodiana
Needs further determination
This individual surprised me a lot. It's in the center of a well-constructed cobweb (pic 7) so I expected to see a theridiid but the zooming captured an araneid instead (likely Paravixia sp.). I then saw a damaged/abandoned orb (pic 8) 10 cm above, presuming it's its original web.
Update: The orbweb doesn't seem to relate (pic 8 removed).