[seanstrom]

I wonder if building a custom language is a simpler way to optimize stuff later on?

For example, Unity uses C# but then you need either all of Mono at runtime or something like IL2CPP to compile to C++. And then eventually that compiler is constantly needing to keep up with language releases and new features. Or in .Net’s case new languages like F#.

[bodge5000]

I'm sure it is, no doubt its easier to pick an existing language than build a whole new one.

For me however, the benefits of an existing language outweigh the costs. If Godot were to use Python for example, you'd gain the full benefit of pip alongside it. If you use C# with Godot, I know you can use Nuget. I'd also personally rather a more performant language than one thats easier to write, but thats personal preference.