I wish more games would release their engines and tooling as FOSS like id Software used to back in the day. It'd make it easier for games to build on top of one another like mods do.
Maybe Godot and Bevy, etc. will become good enough for full AAA-level games one day. It's nice that Blender is pretty much already there for modelling and animation.
But it's crazy how much great work gets thrown away when games are cancelled or code is lost.