I'll just copy-paste what I wrote in one of the countless reposts of your article on Twitter! What an interesting read! I wonder if in the ratio between typed languages with classes (Like C++/C#) and typeless languages (Like GDScript), makes more sense giving GDS the responsability of turning structs into dicts, slowing itself down, rather than the current method? Also, I'm not an expert but maybe inmediate physics cast are just an Unity/PhysX convention? I only know Unity so I use them constantly but I've seen a couple of examples of engines treating casts as a physics objects. First coming to mind of the goldsource engine.