There is this new game Session, the Skateboarding game. The modders have a coded a tool which unpacks the pak file and with that tool included the UnrealPak.exe. Not sure if this is allowed, but if yes, I would like to do the same. Also, the hook into the game for one of their maps and also hook into the pak file to include new files. Before I do the same for another game, I would like to make sure it is ok with Epic.
GitHub - rodriada000/SessionMapSwitcher: Desktop App to easily switch Session maps while running the game, without having to restart every time. (UnrealPak redis and hook into pak file)
https://www.youtube.com/watch?v=dFAWS_VDtTU (map that hooks into game to change day/night)