I decided to deploy my autism and hunt for some tricks still in 2017. There's a mix of original tricks with improvised classics, as well as abusing autohop at 3:21 forwards. I wouldn't call this a freestyle movie, since the tricks aren't really that arbitrary or out of the realm of regular gameplay and are for the most part quite HP-control friendly.
This is part of my Jumping around series, consisting of various games. Check the playlist.
There's so much trickjump potential in QL besides just raw strafe jumping, but much of it is lost when nearly all of the maps are head to toe flat and not much is done with angled surfaces besides few exceptions like the ctf maps Silent Fright and Overlord. They go little overboard with the terrain perhaps, but I think something similar could be done in moderation in competitive maps as well.